Is Mary Mouser Married? The Shocking Real-Life Relationship Status Of Cobra Kai's Samantha LaRusso

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The question of "Who is Mary Mouser's husband?" is one of the most searched queries for fans of the hit Netflix series, Cobra Kai. As of December 2025, the actress who masterfully portrays Samantha LaRusso is not actually married, but she has made a massive, headline-grabbing leap in her personal life that has redefined her relationship status. The latest and most definitive update is that Mary Mouser is officially engaged to her co-star, an announcement that thrilled fans of the show and confirmed a real-life romance that had been brewing behind the scenes for years.

The news of her engagement to fellow *Cobra Kai* star Tanner Buchanan—who plays Robby Keene—broke in February 2025, putting an end to years of speculation about their chemistry both on and off-screen. This major life event has made the "husband" question obsolete, replacing it with a far more exciting wedding watch. This article will dive deep into her comprehensive biography, her previous long-term relationship, and all the fresh details about her engagement to her on-screen rival.

Mary Matilyn Mouser: A Complete Biography and Profile

Mary Mouser, whose full name is Mary Matilyn Mouser, has established herself as one of Hollywood's most versatile young actresses, transitioning seamlessly from child star to a leading role in a global phenomenon.

  • Full Name: Mary Matilyn Mouser
  • Date of Birth: May 9, 1996
  • Age (as of December 2025): 29 Years Old
  • Birthplace: Pine Bluff, Arkansas, United States
  • Parents: Scott and Tina Mouser
  • Siblings: She has two siblings, Aaron Parker Mouser and Laura Ashley Mouser, both of whom are also actors.
  • Net Worth: Estimated to be between $1.5 million and $2 million.
  • Key Roles: Samantha "Sam" LaRusso (*Cobra Kai*), Lacey Fleming (*Body of Proof*), Kelly Gibbs (*NCIS*), and the voice of the title character in *Eloise: The Animated Series*.

Her career started at a very young age, with her first major voice role as the titular character in the Starz Kids & Family series *Eloise*. Before landing the career-defining role of Samantha LaRusso in the *Karate Kid* sequel series *Cobra Kai*, Mouser was widely recognized for her work as Lacey Fleming on the ABC medical drama *Body of Proof* from 2011 to 2013.

The Truth About Mary Mouser’s "Husband" and Her Engagement to Tanner Buchanan

The persistent search for "Mary Mouser husband" is a testament to her success in creating a beloved character in the *Miyagi-Do* world. However, the search results now point to her future, not her past. In a stunning and highly publicized announcement in February 2025, Mary Mouser and her *Cobra Kai* co-star, Tanner Buchanan, revealed their engagement.

The couple confirmed their relationship and engagement simultaneously at a series finale event for *Cobra Kai*, where they posed for photos wearing matching rings and shared a confirming kiss on the red carpet. The news was a surprise to many fans who had long shipped their characters, Samantha LaRusso and Robby Keene, despite their turbulent on-screen relationship and frequent rivalry.

While the on-screen dynamic between Sam and Robby is fraught with tension and karate rivalries, the real-life romance between Mary Mouser and Tanner Buchanan is a heartwarming story. They first met around 2017, the same year *Cobra Kai* began, and their professional collaboration soon blossomed into a private relationship, which they chose to keep out of the spotlight for several years.

The engagement marks a significant milestone for both actors, who have been pivotal to the success of the Netflix series. The transition from co-stars to fiancés is a real-life fairy tale for fans who appreciate the intricate web of relationships within the *Karate Kid* universe.

Mary Mouser’s Past Relationships: The Long-Term Romance with Brett Pierce

Before her engagement to Tanner Buchanan, Mary Mouser was in a long-term, public relationship with actor Brett Pierce. This relationship is a key entity in her dating history and often comes up in searches about her personal life.

Mouser and Pierce began dating in December 2015 and maintained a relationship that lasted for several years. Brett Pierce is also an actor, known for roles in projects like *The Ghost and Molly McGee* and *Stuck in the Middle*. Their relationship was well-documented on social media, with the couple frequently sharing photos together, attending events, and supporting each other's careers.

Reports of their breakup began to surface between 2021 and 2024, marking the end of a significant chapter in Mouser's life. While the exact timeline and reasons for the split were kept private, the relationship with Brett Pierce remains a major part of her public profile before her current high-profile engagement.

The natural progression from a long-term relationship to a public engagement with a co-star has fueled immense curiosity among her fanbase. The focus has now entirely shifted from her former partner, Brett Pierce, to her future husband, Tanner Buchanan.

The Impact of Samantha LaRusso on Mary Mouser’s Career and Topical Authority

Mary Mouser’s role as Samantha LaRusso, the daughter of Daniel LaRusso, is the cornerstone of her current topical authority. The character's journey—from a privileged high schooler to a formidable martial artist torn between the philosophies of Miyagi-Do Karate and Cobra Kai—has resonated with millions globally.

The success of *Cobra Kai* on Netflix propelled Mouser’s career to new heights, making her an international star. Her on-screen interactions with key entities like Ralph Macchio (Daniel LaRusso), William Zabka (Johnny Lawrence), Jacob Bertrand (Eli "Hawk" Moskowitz), and Xolo Maridueña (Miguel Diaz) have created a rich tapestry of content that dominates online searches. The intense fan interest in the relationships between characters like Sam and Robby (Tanner Buchanan) is what ultimately led to the massive excitement over their real-life engagement.

Beyond the dojo drama, Mouser has also been open about her personal struggles, including her diagnosis of Type 1 Diabetes, using her platform to raise awareness. This level of transparency and her dedication to her craft has only increased her connection with the audience, making her one of the most beloved figures in the series. While the search for "Mary Mouser husband" is a simple query, the answer is a complex and exciting story of a career-defining role leading to a real-life engagement with her on-screen rival, Tanner Buchanan, confirming that her love life is just as dramatic and engaging as the Valley's dojo wars.

mary mouser husband
mary mouser husband

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