Lili Reinhart and Jack Martin: Their Complete Relationship Timeline

Lili Reinhart's boyfriend is actor and writer Jack Martin, and although the couple has kept much of their relationship away from the spotlight, their romance has now lasted several years.

The Riverdale actress and Martin first sparked dating rumors in 2023 after they were photographed kissing in Los Angeles. Since then, their relationship has developed from a low-key Hollywood romance into a partnership that both stars occasionally discuss publicly.

There have been Instagram posts, red-carpet appearances, trips together, quiet everyday outings and plenty of sweet comments — but neither Lili nor Jack has appeared particularly interested in turning their relationship into a constant social-media spectacle.

That privacy makes their timeline especially interesting.

From the unexpected way they first connected to their appearance together at the Venice Film Festival, their relationship during difficult periods, their Paris getaway and their more open comments in 2026, here's everything to know about Lili Reinhart and Jack Martin's relationship.

Who Is Lili Reinhart’s Boyfriend Jack Martin?

Jack Martin is an American actor, writer and comedian who initially became known online for his comedy videos before moving further into acting.

Martin grew up in McLean, Virginia. He originally studied political science and had considered a career in politics before deciding to pursue acting. His social-media comedy eventually helped him attract professional representation and opened the door to acting opportunities.

His acting credits include the NBC series La Brea, where he played Josh Harris, along with appearances in projects including The Rookie. In 2026, he also joined the cast of Mindy Kaling's Hulu comedy series Not Suitable for Work.

That career path makes Martin an interesting match for Reinhart.

Lili is obviously one of the better-known names to emerge from Riverdale, where she played Betty Cooper, but Martin has built his own career rather than simply existing in the entertainment industry because of his relationship with her.

He also has a social-media background, which played a surprisingly important role in how the couple met.

How Did Lili Reinhart and Jack Martin Meet?

Unlike many celebrity couples who meet through mutual friends, a film set or an industry event, Lili and Jack's story reportedly began online.

Reinhart revealed that she met Martin through TikTok. Martin had made a video connected to Riverdale, and Lili eventually reached out to him.

In a later interview, Reinhart joked about how unexpectedly the connection developed. What started as a social-media interaction eventually turned into a real relationship.

Before their romance became public, Martin had also posted a comedy sketch parodying Lili's former boyfriend and Riverdale co-star Cole Sprouse.

Martin's resemblance to Sprouse helped make the sketch particularly noticeable, but it was clearly intended as comedy rather than a serious statement about Reinhart's past relationship.

April 2023: Romance Rumors Begin

The first major sign that Lili Reinhart had a new boyfriend came in April 2023.

The actress and Martin were photographed kissing outside Los Angeles International Airport, immediately prompting speculation that they were dating.

At that point, neither star had made a major public announcement about their relationship, so the airport photos became the first real clue for fans.

The timing was also notable because Reinhart had previously been in a high-profile relationship with Cole Sprouse.

The pair, who met while working on Riverdale, had dated for several years before their relationship ended. By 2023, however, Lili had clearly moved into a new chapter.

And Jack Martin was becoming part of it.

July 2023: Jack Makes Their Relationship Public

A few months after the airport photos, Martin appeared to confirm the romance himself.

In July 2023, he shared a series of photographs featuring Reinhart on Instagram. His playful caption referred to an “unbelievable” amount of smiling and chilling, giving fans their first real social-media glimpse of the couple together.

It was a very Jack-and-Lili way to go public.

There was no dramatic announcement or carefully staged relationship reveal. Instead, the two simply began appearing in each other's online worlds.

August 2023: Lili Celebrates Jack’s Birthday

In August, Reinhart returned the gesture.

She shared photos of Martin for his birthday, giving fans another glimpse into their relationship.

The posts were affectionate without feeling overly staged, and they helped establish that the romance was not simply a brief Hollywood fling.

By this point, Lili and Jack were clearly spending significant time together, and their relationship was becoming increasingly difficult to describe as a rumor.

September 2023: Venice Film Festival Debut

One of the biggest moments in the couple's early relationship came in September 2023, when they traveled together to Venice.

Reinhart and Martin were photographed arriving in the city together ahead of events surrounding the Venice Film Festival. They were also seen attending events during the trip.

Their Venice appearance effectively became their first major public outing as a couple.

Lili was already a familiar face at international fashion and entertainment events, so seeing her arrive with Martin naturally generated plenty of attention.

Martin also shared a particularly sweet birthday tribute to Lili that month, describing her in affectionate terms and celebrating her personality.

It was one of the clearest indications yet that their relationship had become serious.

2024: Keeping Things More Private

During 2024, Lili and Jack continued their relationship but did not turn it into an everyday public spectacle.

That seems to have been intentional.

The couple made occasional public appearances and shared small moments online rather than documenting every part of their lives.

One of the more memorable glimpses came around Valentine's Day 2024, when Reinhart shared a photograph of herself kissing Martin.

The couple also spent time together around the holidays, with Reinhart sharing a Christmas post featuring their “little family” in December 2024.

Those small posts tell a bigger story about their relationship.

Rather than constantly appearing on red carpets together, Lili and Jack seemed more comfortable sharing occasional snapshots from their everyday life.

January 2025: Jack Supports Lili During a Difficult Period

One of the most significant developments in their relationship came in January 2025, when Reinhart publicly acknowledged how much Martin had supported her during a difficult period involving her health.

She credited her partner with being there while she dealt with serious pain and a major change in her quality of life. Her comments made clear that Martin's role in her life extended far beyond being her boyfriend at celebrity events.

The moment also changed the way many people viewed their relationship.

Until then, fans had mostly seen Lili and Jack through photographs, social media and public appearances.

This was different.

Reinhart was openly describing Martin as someone who had stayed beside her during an extremely difficult period.

2025: Lili Calls Herself a “Lover Girl”

By late 2025, Reinhart was a little more open about her relationship.

In an interview with Marie Claire, she described herself as being in her “lover girl era” and spoke warmly about Martin.

She also explained that she is naturally domestic and enjoys simply being at home with the person she loves and her dog.

The actress acknowledged that being apart from Martin while they were both working could be difficult. Their careers sometimes required them to spend weeks in different locations, so they would visit each other whenever their schedules allowed.

That comment offered a surprisingly relatable look at their relationship.

Hollywood couples often have to deal with long-distance stretches because of filming schedules, press tours and travel. Lili and Jack are no exception.

Their solution appears to be fairly simple: when one is working, the other visits when possible, and when both are busy, they make the most of the time they can get together.

2026: Lili and Jack Are Still Together

By 2026, the relationship had clearly continued.

In February 2026, Reinhart shared photographs from a romantic trip to Paris with Martin. Her caption included the line, “I've got my love to keep me warm,” giving fans another affectionate glimpse of the couple.

The Paris trip also coincided with Lili's fashion commitments. She attended Paris Fashion Week while spending time with Jack during the trip.

It was another example of how the couple balances work and their personal life.

Lili could be attending fashion events during the day and enjoying quieter moments with Martin away from the spotlight.

April 2026: A Casual Farmers’ Market Date

The couple also offered a very different kind of glimpse into their relationship in April.

Rather than a red carpet or glamorous event, Lili and Jack were photographed holding hands during a farmers' market outing in Studio City, California.

Reinhart wore a casual green trench coat over a white shirt and jeans, accessorized with black loafers, sunglasses and a brown bag. Martin kept things equally relaxed in a black hoodie, jeans, brown shoes and sunglasses.

It was a simple date, but perhaps that is exactly what makes it appealing.

For a couple whose careers involve cameras almost everywhere they go, a normal weekend outing feels much more intimate than another red-carpet appearance.

June 2026: Jack Opens Up About Lili

By June, Martin was also publicly speaking about Reinhart.

During an interview with Entertainment Tonight, he was asked about his girlfriend and responded with a series of affectionate comments, describing how grateful he was for her and praising her kindness, empathy and warmth.

Reinhart was shown his comments and responded by saying that although they generally try to keep their relationship private, they are together and happy. She also described Martin as the most supportive person in her life.

That exchange perhaps sums up their approach better than anything else.

They are not hiding.

They simply do not appear interested in sharing every detail.

September 2026: Jack Even Knows About Lili’s Rom-Com Scenes

Their relationship became a fun talking point again during Lili's promotional tour for The Love Hypothesis.

The romantic comedy, based on Ali Hazelwood's bestselling novel, stars Reinhart as Olive Smith opposite Tom Bateman as Adam Carlsen.

In a September interview with ELLE, Reinhart revealed that Martin was actually beside her when she first read the novel's intimate hotel-room scene.

She said she showed him parts of the chapter while they were on an airplane together, creating a rather amusing real-life moment considering the movie would later require her to film those scenes with Bateman.

It also illustrates the level of trust within their relationship.

Instead of treating her boyfriend's reaction as an awkward secret, Reinhart talked about it casually.

Lili Reinhart’s Recent Career and Jack’s Place in Her Life

Lili's relationship with Martin has unfolded alongside one of the busiest periods of her career since Riverdale.

She has continued acting in films and television while taking on more creative opportunities, including executive-producing The Love Hypothesis. She is also enjoying a major fashion moment during the film's promotional campaign.

Recent appearances have included a vintage-inspired Emanuel Ungaro look for The Tonight Show Starring Jimmy Fallon, as well as several New York appearances connected to the movie's promotional tour.

Related Lili Reinhart Fashion Stories

• Lili Reinhart Wore Vintage Emanuel Ungaro on The Tonight Show Starring Jimmy Fallon
• Lili Reinhart Wore Valentino Lace Bodysuit and Miniskirt in NYC
• Lili Reinhart’s Hervé Léger Look for the Miss Congeniality Tribute
• Lili Reinhart Wore Vintage Emanuel Ungaro for The Love Hypothesis London Premiere

Her relationship with Jack has continued through all of this.

Lili Reinhart and Jack Martin’s Approach to Privacy

One of the most consistent themes in their relationship is privacy.

They are clearly comfortable being photographed together. They attend events together, travel together, share occasional social-media posts and openly refer to each other as partners.

But they do not seem interested in turning their relationship into a daily reality show.

That distinction matters.

In her Marie Claire interview, Reinhart talked about how difficult it can be when work keeps her away from Martin for extended periods. She also made it clear that her relationship and home life matter deeply to her, even as she continues building her career.

The couple's public appearances therefore tend to feel like glimpses rather than full access.

There is the occasional red carpet.

There is a birthday post.

There is a holiday photograph.

There is a farmers' market date.

And then they go back to living their lives.

What Makes Lili Reinhart and Jack Martin’s Relationship Interesting?

Part of the interest comes from how unexpectedly they met.

Another part comes from their shared entertainment background.

But the biggest difference between their romance and some other celebrity relationships may simply be the pace.

Lili and Jack did not immediately turn themselves into a social-media couple.

Their relationship gradually became public:

• April 2023: Dating rumors begin after their LAX kiss.
• July 2023: Martin posts Lili on Instagram.
• August 2023: Lili celebrates Jack's birthday.
• September 2023: Venice Film Festival appearance and birthday tribute.
• February 2024: Lili shares a Valentine's Day moment.
• December 2024: Christmas glimpse of their life together.
• January 2025: Lili publicly praises Jack's support during a difficult period.
• November 2025: Lili talks openly about being in her “lover girl era.”
• February 2026: Romantic Paris getaway.
• April 2026: Casual farmers' market date.
• June 2026: Both speak warmly about their relationship.
• September 2026: Lili talks about Jack during The Love Hypothesis promotion.

It is a timeline that feels much more like a real relationship than a carefully planned celebrity launch.

Who Is Lili Reinhart Known For?

For readers discovering her through her relationship with Jack, Lili Reinhart remains best known for playing Betty Cooper on Riverdale.

The role made her a household name among a generation of television viewers and earned her a major Hollywood profile.

She has since expanded into films including Hustlers, Chemical Hearts and Look Both Ways, while continuing to take on projects that allow her to move beyond the character that first made her famous.

In 2026, The Love Hypothesis represents another shift, with Reinhart stepping into a romantic-comedy lead as Olive Smith.

The movie's promotional campaign has also given fans a chance to see a lighter, more playful side of her fashion and public persona.

Lili Reinhart’s Boyfriend in 2026

So, who is Lili Reinhart's boyfriend?

As of September 2026, it is Jack Martin, the actor and writer she has been dating since 2023.

Their relationship has survived busy filming schedules, international travel, public attention and the pressures that come with both partners working in entertainment.

Yet the couple still appears to prefer a relatively normal rhythm when they are together.

They go on dates.

They travel.

They support each other's careers.

They share occasional photographs.

And they have both become more comfortable acknowledging how important the relationship is to them.

After more than three years together, Lili Reinhart and Jack Martin have managed to maintain something that can be difficult for celebrity couples: a public relationship without making their private life entirely public.

For now, that balance seems to suit them.

And judging from their recent comments about one another, the Riverdale star and her actor boyfriend appear to be happily continuing their relationship while building their respective careers.