5 Shocking Details About Tanner Buchanan And Mary Mouser's Engagement (Confirmed 2025)

The line between on-screen rivalry and real-life romance has officially blurred: *Cobra Kai* stars Tanner Buchanan and Mary Mouser are engaged. The news, which has sent the fandom into a frenzy, broke in February 2025, just as the cast celebrated the final season of their hit Netflix series. For years, fans have speculated about the nature of their relationship, given their undeniable chemistry and the dramatic, often tumultuous, connection between their characters, Robby Keene and Samantha LaRusso. This article dives deep into the announcement, the history of their private romance, and everything you need to know about the couple who truly brought the spirit of Miyagi-Do and Cobra Kai together.

The surprise announcement came during the highly anticipated premiere event for *Cobra Kai* Season 6 Part 3, where the couple walked the red carpet together. The subtle yet unmistakable matching rings—and a very public kiss—confirmed what many had only dreamed of: the actors who played the on-again, off-again rivals and love interests are now set to become husband and wife. This real-life plot twist is arguably the most satisfying ending the *Karate Kid* universe could have delivered.

Tanner Buchanan and Mary Mouser: Complete Biography and Profile

The on-screen chemistry and off-screen connection between Tanner Buchanan and Mary Mouser are rooted in years of working together on one of television's most successful spin-offs. Before they became Robby Keene and Samantha LaRusso, both actors had already established impressive careers in Hollywood.

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Tanner Buchanan Profile

• Full Name: Tanner Emmanuel Buchanan
• Date of Birth: December 8, 1998
• Place of Birth: Lima, Ohio, United States
• Current Age (as of December 2025): 27
• Notable Roles: Robby Keene (*Cobra Kai*), Leo Kirkman (*Designated Survivor*), Mason Kendall (*Game Shakers*), Chad in the film *He's All That*.
• Career Start: Began his acting career around 2010, with early appearances in shows like *Modern Family*.
• Character in *Cobra Kai*: Robby Keene, the troubled son of Johnny Lawrence, who trained under both Cobra Kai (under John Kreese) and Miyagi-Do (under Daniel LaRusso), eventually finding redemption and peace.

Mary Mouser Profile

• Full Name: Mary Matilyn Mouser
• Date of Birth: May 9, 1996
• Place of Birth: Pine Bluff, Arkansas, United States
• Current Age (as of December 2025): 29
• Notable Roles: Samantha "Sam" LaRusso (*Cobra Kai*), Lacey Fleming (*Body of Proof*), voice work in *Pound Puppies*, and early roles in shows like *Without a Trace*.
• Career Start: A veteran child actress, she began her career in the early 2000s.
• Character in *Cobra Kai*: Samantha "Sam" LaRusso, the daughter of Daniel LaRusso, who struggles to balance her life while becoming a formidable karate practitioner, often caught between the rivalries of Robby Keene and Miguel Diaz.

The Secret History: From Co-Stars to Engaged Couple

While the actors' characters, Robby and Sam, were entangled in a high-stakes, dramatic relationship that swung wildly between romance and rivalry—often driven by the larger conflict between Miyagi-Do and Cobra Kai—Tanner and Mary’s real-life bond was a closely guarded secret for years. Their relationship timeline is a fascinating study in privacy amidst public scrutiny.

The two first met around 2017 during the initial production of *Cobra Kai*. The intense, shared experience of launching a major series, especially one that required rigorous martial arts training, created a unique bond among the cast, including Xolo Maridueña (Miguel Diaz) and Jacob Bertrand (Hawk).

Rumors of a real-life romance have circulated almost since the show’s debut, fueled by their undeniable on-screen connection and frequent, affectionate social media posts. However, the couple consistently maintained a stance of being "best friends" and close colleagues, expertly deflecting speculation. This privacy was a deliberate choice, allowing them to nurture their relationship away from the relentless spotlight that follows major Netflix stars.

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The shift from rumored romance to confirmed engagement in February 2025 was a masterful move, timed perfectly with the conclusion of the series that brought them together. By confirming both their dating status and their engagement simultaneously, they offered fans a stunning, conclusive piece of good news to cap off the *Cobra Kai* era.

5 Shocking Details Surrounding the 2025 Engagement

The announcement wasn't just a simple statement; it was a red-carpet reveal that contained several surprising elements, making it one of the most talked-about celebrity engagements of the year.

1. The Simultaneous Confirmation of Dating and Engagement

For years, both Tanner Buchanan and Mary Mouser expertly sidestepped questions about their romantic status. The biggest shock for fans was not just the engagement, but the simultaneous confirmation that they had been an item for a significant period. This level of secrecy is rare in Hollywood, proving their commitment to keeping their private lives separate from their public roles as Robby and Sam. This revelation instantly silenced years of speculation about who each of them was dating.

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2. The *Cobra Kai* Finale Red Carpet Reveal

The setting for the announcement couldn't have been more poetic. The couple chose the premiere event for *Cobra Kai* Season 6 Part 3—the series finale—to debut their news. This symbolic choice links their personal milestone directly to the professional journey that defined their twenties. They literally ended the *Karate Kid* saga with a real-life happy ending, providing a beautiful sense of closure for the entire cast and crew.

3. The Matching Engagement Rings

Instead of a traditional single engagement ring for Mary, the couple sported matching rings on the red carpet. While details about the rings' design and meaning are still emerging, this choice speaks volumes about their commitment to equality and partnership. The matching bands were the first public clue that quickly led to the confirmation of their engagement, a subtle but powerful statement of unity.

4. The Fan Reaction and Co-Star Support

The fan reaction was immediate and overwhelmingly positive, with the news trending globally within hours. The couple's *Cobra Kai* co-stars—including veterans Ralph Macchio (Daniel LaRusso) and William Zabka (Johnny Lawrence), as well as younger cast members like Peyton List (Tory Nichols) and Gianni DeCenzo—were quick to offer public congratulations, confirming the close-knit nature of the show's family. The collective joy of the cast, who have shared the emotional journey of the Sekai Taikai and the final season, added a layer of warmth to the news.

5. The Future Beyond the Dojo

With *Cobra Kai* concluding, the engagement marks the start of a new, post-Miyagi-Do chapter for the couple. Both actors have multiple projects lined up, but the public commitment signals their intention to navigate the next phase of their careers—and their lives—as a united front. Their professional paths are now intertwined with their personal story, creating a powerful narrative for their future endeavors in film and television.

The Legacy of Robby and Sam: A Real-Life Redemption Arc

The on-screen relationship between Robby Keene and Samantha LaRusso was a microcosm of the show's central conflict. Their dynamic was a constant, tense battle between the philosophies of Miyagi-Do and Eagle Fang/Cobra Kai. Robby’s journey from a troubled youth to a balanced karate student—and Sam’s struggle to find her own path amidst the LaRusso legacy—often saw them as rivals, sometimes as friends, and occasionally as lovers.

The real-life engagement of Tanner and Mary offers a beautiful, real-world redemption arc that mirrors the show's themes of unity and peace. It’s a testament to the idea that even after years of on-screen fighting and drama, love and partnership can ultimately prevail. Their story provides a powerful, positive takeaway for fans who have invested years in the *Karate Kid* universe, proving that sometimes, the best partnerships are forged in the heat of the dojo.

As the couple plans their wedding, the excitement among the *Cobra Kai* community remains palpable. The question on everyone's mind is whether the wedding guest list will feature a full-scale reunion of the cast, complete with Daniel LaRusso, Johnny Lawrence, and perhaps even a truce between the dojos for the celebration.