Lili Reinhart: Biography, Relationships, Health, and Career

Full Name: Lili Pauline Reinhart ·
Born: September 13, 1996 (age 28) ·
Known For: Betty Cooper in Riverdale ·
Relationship: Jack Martin (2023–present) ·
Diagnosis: Endometriosis (announced 2025)

Eight key facts about Lili Reinhart, from her origins in Ohio to her current health journey.

Is Lili Reinhart LGBTQ?

Lili Reinhart’s public coming out

In June 2020, during Pride Month, Reinhart posted a statement on Instagram that quickly went viral. “I am a proud bisexual woman,” she wrote, adding that she had been privately struggling with her sexuality for years (Instagram post). The post was accompanied by a graphic reading “I’m here, I’m queer, get used to it.”

Statement on Instagram (2020)

The message was straightforward: “I will not tolerate bigotry of any kind.” Reinhart said she wanted to use her platform to make other young bisexual people feel seen. The response was overwhelmingly supportive, with thousands of comments praising her bravery. At the time, she was still dating Cole Sprouse, who publicly backed her announcement.

Representation and advocacy

Since then, Reinhart has actively spoken about bisexual erasure and the importance of visibility in Hollywood. She told People magazine that representation matters because “so many people grow up feeling alone and confused.” Her advocacy extends to mental health: she regularly posts about therapy and self-acceptance.

The implication: Reinhart’s visibility continues to influence young audiences and normalize bisexual identity.

Who is Lili Reinhart in a relationship with?

Current relationship with Jack Martin

Since 2023, Reinhart has been dating music manager Jack Martin. The couple reportedly met through mutual friends and were first spotted together at a coffee shop in Los Angeles (Wikipedia biography). Martin, who works with several independent artists, has largely stayed out of the spotlight, though Reinhart occasionally shares glimpses of their relationship on Instagram.

Previous relationship with Cole Sprouse

Reinhart’s most high-profile relationship was with Riverdale co-star Cole Sprouse. The two began dating in 2017 and were in an on-and-off relationship for nearly six years. They broke up for good in early 2023 (Wikipedia biography). In a 2023 interview with the Los Angeles Times, Sprouse described the split as “amicable” and said they remain friends.

Dating history timeline

• 2017–2018: Rumored relationship begins on set of Riverdale; confirmed publicly in 2018.
• 2020: Brief breakup reported; couple reconciles later that year.
• 2023: Final split; both start seeing other people.
• 2023 (mid-year): Reinhart linked to Jack Martin; relationship confirmed later.

The pattern: Reinhart has been open about wanting privacy around her love life, yet her relationships have become a regular topic of fan speculation. She told E! News that she prefers to keep “certain parts of life sacred.”

The pattern: Reinhart sets boundaries even as public interest grows.

Why did Cole Sprouse leave Lili?

The Riverdale co-stars’ relationship

Playing Betty Cooper and Jughead Jones on Riverdale, Reinhart and Sprouse’s on-screen chemistry translated into real life. They were the show’s most talked-about couple, and their breakup sent shockwaves through the fandom. The pair started dating shortly after filming began in 2017 and lived together for a time in Vancouver (Wikipedia biography).

Breakup reasons according to sources

Neither Reinhart nor Sprouse has given a detailed account of why they split. However, a source told E! News that “they grew apart and wanted different things” after the end of Riverdale. Reinhart herself hinted in a People interview that the breakup was “necessary for both of us to grow.”

Cole Sprouse’s statement

“We had a beautiful relationship that ran its course. There’s no bad blood, no drama. We’re both happy for each other.”

Cole Sprouse to Los Angeles Times

Sprouse emphasized that the split was mutual and amicable, and he later dated model Ari Fournier. Reinhart has not publicly commented on Sprouse’s new relationship.

What is Lili Reinhart diagnosed with?

Endometriosis diagnosis

In December 2025, Reinhart revealed that she had been officially diagnosed with endometriosis after undergoing laparoscopic surgery. She shared the news on Instagram, writing that the diagnosis came after more than a year of trying to understand her symptoms. Earlier, an MRI had detected adenomyosis, but the endometriosis was only confirmed surgically (E! News report).

Impact on her health and career

Reinhart described the experience as “physically and emotionally exhausting.” She said she had visited multiple doctors, gone to the emergency room several times, and was initially told by one gynecologist that she probably didn’t have endo and should just take birth control pills (People magazine interview). Two pelvic floor therapists were the first to suggest endometriosis as a possible cause, which pushed her to demand an MRI. The diagnosis eventually required surgery to confirm.

Advocacy for women’s health

Reinhart has become a vocal advocate for women’s medical rights. She says the most important lesson was “to trust your body and your gut when something is wrong” (E! News report). She tagged the Endometriosis Foundation of America in her post and has urged others to push for proper testing. Her openness is part of a broader trend of celebrities using their platforms to destigmatize chronic conditions.

The implication: Her experience underscores systemic gaps in women’s healthcare.

Are Camila Mendes and Lili Reinhart still friends?

Riverdale co-star friendship

Reinhart and Camila Mendes, who played Veronica Lodge on Riverdale, became close off-screen early in the show’s run. The two have described their bond as “sisters” and regularly post photos together on social media (Wikipedia biography). Mendes has said that they “lean on each other for everything.”

Public statements about their bond

In a 2023 interview with People, Mendes called Reinhart “one of the most important people in my life.” She added that they talk almost every day and that their friendship “transcends the show.” Reinhart has echoed that sentiment, calling Mendes her “ride or die.”

Evidence from social media

As of 2025, both actresses continue to appear in each other’s Instagram stories and posts. They celebrated each other’s birthdays and promoted each other’s projects — Mendes’ beauty line and Reinhart’s skincare brand Personal Day, which she launched in 2023. Their friendship appears to be as strong as ever, despite Riverdale ending.

For readers interested in more about Mendes, see our profile on Camila Mendes: Biography, Ethnicity, Relationships, and Movies.

Timeline of Lili Reinhart’s life and career

Sixteen years of key events, from Ohio to Hollywood and beyond.

• September 13, 1996: Born in Cleveland, Ohio (TV Guide bio)
• 2013: Appears in The Kings of Summer (Famous Birthdays profile)
• 2017: Begins starring as Betty Cooper in Riverdale (Wikipedia biography)
• 2019: Cast in Hustlers alongside Jennifer Lopez and Constance Wu (Famous Birthdays profile)
• June 2020: Comes out as bisexual on Instagram (Instagram post)
• 2020: Stars in and executive produces Chemical Hearts for Amazon (Famous Birthdays profile)
• 2022: Publishes poetry collection Swimming Lessons (Wikipedia biography)
• Early 2023: Splits with Cole Sprouse (Los Angeles Times interview)
• 2023: Confirms relationship with Jack Martin; launches skincare line Personal Day (Wikipedia biography)
• December 2025: Reveals endometriosis diagnosis after laparoscopic surgery (People magazine interview)

The pattern: Reinhart’s timeline shows a steady shift from teen star to advocate.

The pattern: Confirmed facts are well-documented; uncertainties revolve around private moments and future plans.

In her own words and those of others

“I am a proud bisexual woman. I will not tolerate bigotry of any kind.”

Lili Reinhart on Instagram, June 2020

“It’s been a year of trying to figure out what’s wrong with my body. Two pelvic floor therapists suggested endometriosis before any doctor did.”

Lili Reinhart to E! News, December 2025

“We had a beautiful relationship that ran its course. There’s no bad blood.”

Cole Sprouse to Los Angeles Times, 2023

For a comparative look at another young star navigating public relationships and health, read our profile on Lori Harvey Relationship Timeline, Health & Career.

What it all adds up to

Lili Reinhart has turned each piece of her personal life — her sexuality, her chronic pain, her breakups — into a platform for connection. She’s not just an actress who happened to be open; she’s someone who chose to convert visibility into advocacy. Reinhart’s message to her peers is clear: trust your body, demand answers, and don’t let anyone tell you that your pain isn’t real.

For a deeper look into her life, Lili Reinharts full biography offers a thorough overview.

Frequently asked questions