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The Definitive Timeline: Who Is Dylan O'Brien's Girlfriend In 2025? (Plus His Complete Dating History)

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The question of who holds the heart of Hollywood heartthrob Dylan O'Brien is finally settled in late 2025. After years of intense speculation, a highly private lifestyle, and a string of high-profile dating rumors, the actor is confirmed to be in a serious relationship with model and photographer Rachael Lange.

As of December 22, 2025, the couple has moved past the initial 'rumored' phase, making subtle but clear public appearances and social media nods that confirm their status. The relationship marks the most significant public romance for O'Brien since his long-term partnership with actress Britt Robertson, making this a pivotal moment in his private life.

Dylan O'Brien: Full Biography and Career Profile

Dylan Rhodes O'Brien is an American actor and musician, best known for his breakout roles in major film and television franchises. Born on August 26, 1991, in New York City, he was raised in Springfield Township, New Jersey, before his family moved to Hermosa Beach, California, when he was twelve years old. His father, Patrick O'Brien, is a camera operator, and his mother, Lisa O'Brien, is a former actress, giving him an early connection to the entertainment industry.

O'Brien initially intended to pursue a career in sports broadcasting, even planning to attend Syracuse University. However, his burgeoning YouTube career, which featured his self-produced comedy videos, caught the attention of a manager, leading him to audition for acting roles.

His career trajectory is defined by two major roles:

  • Stiles Stilinski in Teen Wolf: From 2011 to 2017, O'Brien starred as the witty, fan-favorite human sidekick Stiles Stilinski in the MTV supernatural series Teen Wolf. The role cemented his status as a global star and earned him a massive, dedicated fanbase.
  • Thomas in The Maze Runner Trilogy: He took the lead role of Thomas in the dystopian science fiction film series The Maze Runner, which included The Maze Runner (2014), Maze Runner: The Scorch Trials (2015), and Maze Runner: The Death Cure (2018).

In recent years, O'Brien has focused on more mature and critically acclaimed projects, including the action film American Assassin (2017), the blockbuster Bumblebee (2018), and the post-apocalyptic comedy Love and Monsters (2020).

His upcoming projects in 2025 and beyond highlight his commitment to diverse roles, including the highly anticipated independent film Twinless, for which he received critical acclaim, the horror-thriller Send Help alongside Rachel McAdams, and the disability rights drama Being.

Rachael Lange: Who is Dylan O'Brien's Confirmed Girlfriend in 2025?

After a period of keeping his personal life intensely private following his last major public relationship, Dylan O'Brien is now dating model and photographer Rachael Lange. Their relationship is the most significant update to his dating status in years and has been a major point of interest for fans and the media throughout 2024 and 2025.

The couple was first linked in January 2023, and their public appearances have become increasingly consistent. Lange, who is known for her work as a fashion model and her artistic photography, has been a quiet but constant presence in O'Brien's life.

The Timeline of Dylan O'Brien and Rachael Lange's Relationship

While the couple has never given an exclusive interview confirming their status, their actions have spoken louder than words, providing a clear timeline of their romance:

  • Early 2023: Rumors begin to circulate after they are spotted together. They are photographed holding hands at Paris Fashion Week, a major sign of a budding public relationship.
  • 2024: Lange begins to feature O'Brien in her personal photography posts on Instagram, referring to him as "Lover in the tulip fields" in a now-famous April post. This was the strongest, most personal confirmation of their relationship.
  • 2025: The couple attends the prestigious Sundance Film Festival together, with O'Brien openly referring to Lange as his "girlfriend." Sources also noted O'Brien mentioning how his girlfriend was with him "every step of the way" during a past medical recovery, suggesting a deep, supportive bond.
  • Current Status (Late 2025): They have been photographed on numerous casual outings, including walks around New York City, solidifying their status as an established Hollywood couple.

The age difference between the pair has also been a topic of discussion, with O'Brien (born 1991) being older than Lange (who turned 25 around the start of their public relationship). However, this has not deterred the couple, who maintain a low-key and supportive partnership.

A Look Back: Dylan O'Brien's Complete Dating History and Rumors

Dylan O'Brien is known for keeping his private life away from the public eye, but his high-profile career has inevitably led to a history of confirmed relationships and intense media speculation. Exploring his past helps to put his current, more open relationship with Rachael Lange into context.

The Long-Term Romance: Britt Robertson (2011–2018)

Dylan O'Brien's most significant and well-known relationship was with actress Britt Robertson. The two met on the set of the film The First Time in 2011 and dated for approximately seven years.

Their relationship was a staple of early 2010s Hollywood, often cited as a stable, long-lasting celebrity romance. The split, which was reported around 2018, was amicable and marked the end of an era for both actors, leading to O'Brien's subsequent period of intense privacy.

The Whirlwind of Dating Rumors (2020–2022)

Following his breakup with Robertson, O'Brien was linked to several other prominent figures, though none of these relationships were ever officially confirmed or lasted long in the public eye. These rumors often dominated entertainment headlines, showcasing the public's intense curiosity about his love life.

  • Sarah Ramos (2020): Briefly linked to actress Sarah Ramos, though details were sparse.
  • Chloe Bennet (2022): The Agents of S.H.I.E.L.D. star and O'Brien were seen together in mid-2022, sparking a brief round of dating speculation.
  • Sabrina Carpenter (2022): One of the more high-profile rumors involved singer and actress Sabrina Carpenter. They were spotted together, but the speculation quickly faded.
  • Gracie Abrams (2022): O'Brien was also linked to singer Gracie Abrams. The connection gained traction when Abrams released the song "Us," which fans speculated contained pointed lyrics about O'Brien's age and their rumored relationship.

These brief, high-intensity rumors highlight O'Brien's preference for maintaining a strong boundary between his professional life as an actor in projects like Ponyboi and The Maze Runner and his personal life. The fact that his relationship with Rachael Lange has become the first to move past the 'rumor' stage and into confirmed public appearances suggests a new, more stable chapter for the star. The topical authority surrounding O'Brien's dating life is intrinsically linked to his fame from the *Teen Wolf* Stiles Stilinski role, making every relationship update a major news event. The current focus on Rachael Lange is the most concrete information fans have received in years, providing a clear answer to the perennial question: Who is Dylan O'Brien's girlfriend in 2025? The answer is model Rachael Lange.

dylan o'brien's girlfriend
dylan o'brien's girlfriend

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