The Real-Life Romance Of Mary Mouser: Why She Doesn't Have A Husband (Yet) And Who She's Engaged To

The question of "Who is Mary Mouser's husband?" is one of the most searched queries about the *Cobra Kai* star, but the answer is that the talented actress is not married—yet. As of December 2025, Mary Matilyn Mouser has captivated millions as Samantha "Sam" LaRusso in the beloved Netflix series, but her personal life has recently taken a major, newsworthy turn that has fans buzzing more than any karate tournament. She is officially engaged to her long-time partner and co-star, Tanner Buchanan, confirming a real-life romance that mirrors the on-screen drama of the Miyagi-Do and Cobra Kai rivalry. This deep dive into Mary Mouser’s life will clarify her current relationship status, detail the exciting engagement announcement, and explore her journey from a young actress in Pine Bluff, Arkansas, to becoming one of the most recognizable faces in the streaming era. We will explore the full biography of the actress, the end of her previous long-term relationship, and the real-life connection that blossomed on the set of the global phenomenon, *Cobra Kai*.

Mary Mouser: A Comprehensive Biography and Career Profile

Mary Matilyn Mouser has built a prolific career in Hollywood, starting at a young age. Her on-screen presence is marked by a blend of vulnerability and strength, which she brings to her most famous role as the daughter of Daniel LaRusso.

• Full Name: Mary Matilyn Mouser
• Date of Birth: May 9, 1996
• Age (as of Dec 2025): 29 years old
• Birthplace: Pine Bluff, Arkansas, USA
• Parents: Tina Mouser (Mother) and Scott Mouser (Father)
• Siblings: Aaron Parker Mouser and Laura Ashley Mouser (Both are also actors)
• Height: Approximately 5 feet 3 inches (160 cm)
• Estimated Net Worth: Between $1.5 million and $2 million USD, primarily from her acting career
• Key Roles/Filmography Highlights:
  • Television: Samantha "Sam" LaRusso in Cobra Kai (2018–2025), Lacey Fleming in Body of Proof (2011–2013), Mia in Life Is Wild (2007–2008).
  • Film/Voice Work: Voice of Eloise in Eloise at the Plaza (2003), voice of a young girl in Son of the Mask (2005), voice work in Bambi II (2006), and roles in Alexander and the Terrible, Horrible, No Good, Very Bad Day (2014) and A Mermaid's Tale (2017).
• Relationship Status: Engaged to Tanner Buchanan (Announced February 2025)

Mouser began her career in her home state before moving to Los Angeles to pursue acting full-time. She landed her first major recurring role on the police procedural drama Without a Trace and gained significant recognition for her role as Lacey Fleming on the ABC medical drama Body of Proof. Her career trajectory shifted dramatically when she was cast as Sam LaRusso, the character that would cement her status as a global star.

The Engagement: Mary Mouser and Tanner Buchanan's Real-Life Romance

The biggest news in Mary Mouser's personal life, and the definitive answer to the "husband" question, is her recent engagement to *Cobra Kai* co-star Tanner Buchanan. This announcement was a massive surprise and a joyous moment for fans who had long shipped their on-screen dynamic.

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The couple, who play complex and often adversarial love interests (Samantha LaRusso and Robby Keene) in the Netflix series, publicly confirmed their dating status and simultaneous engagement in February 2025. This "hard launch" of their relationship was revealed in a joint Instagram post and on the red carpet of a major *Cobra Kai* series finale event.

A Timeline of the Tanner Buchanan and Mary Mouser Relationship

While the pair kept their romance private for a significant period, the relationship timeline, as revealed by recent updates, shows a deep and evolving connection:

• 2017: Mary Mouser and Tanner Buchanan first meet on the set of *Cobra Kai*, where they begin to form a close bond as co-stars.
• 2018–2024: The two maintain a private relationship while rumors of a real-life romance circulate, often fueled by their on-screen chemistry and off-screen friendship. During this time, Mouser was still in a long-term relationship with actor Brett Pierce.
• 2024: Reports emerge confirming the end of Mary Mouser's previous relationship with Brett Pierce, which had lasted since December 2015.
• February 2025: Mary Mouser and Tanner Buchanan officially confirm they are dating and, in a stunning double announcement, reveal their engagement. They showcased matching diamond rings, calling it a "special moment in our lives" and finally sharing their secret with the world.

The revelation that the actors behind Sam LaRusso and Robby Keene, two characters whose relationship is central to the show's drama, are engaged in real life has been a peak moment of topical authority for the *Cobra Kai* fandom. The focus has shifted from "Who is Mary Mouser dating?" to anticipation for their upcoming wedding.

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The Journey to Engagement: Previous Relationships and Public Life

Before her engagement to Tanner Buchanan, Mary Mouser was known for her transparency regarding her long-term relationship with actor Brett Pierce. This previous relationship was a significant part of her personal life for many years, providing a contrast to the high-profile, on-set romance that followed.

The Long-Term Relationship with Brett Pierce

Mary Mouser and Brett Pierce began dating in December 2015 and were very open about their connection on social media, often celebrating milestones like their five-year anniversary. Pierce, also an actor, was a constant fixture in Mouser's life and was frequently mentioned in interviews. The relationship was a testament to longevity in Hollywood, lasting for nearly a decade.

Reports of the couple's separation emerged in 2024, signaling the end of their long-standing partnership. This breakup paved the way for the actress to move into a new chapter of her life, ultimately leading to her engagement. The transition highlights the natural evolution of relationships in the public eye.

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Navigating Fame and Personal Life

Mary Mouser has often used her platform to discuss important personal topics, adding significant depth to her public persona. She has been an advocate for Type 1 Diabetes awareness, having been diagnosed with the condition herself. She frequently shares her health journey, using her influence to educate and support others. This dedication to authenticity is a key reason why her fans feel so connected to her personal milestones, including the news of her engagement.

The intense scrutiny that comes with being a lead in a globally successful series like *Cobra Kai* means that questions about "Mary Mouser boyfriend" or "Mary Mouser husband" are inevitable. However, by taking control of her narrative and sharing her relationship news on her own terms, Mouser has successfully managed to keep her personal life fresh, unique, and engaging for her audience, all while maintaining her focus on her thriving career as Samantha LaRusso. The next major milestone for the star will undoubtedly be her wedding to Tanner Buchanan, a union that officially makes the Miyagi-Do and Cobra Kai worlds one.