Does Mary Mouser Have a Boyfriend? Everything We Know About Her Dating History

Mary Mouser began her career as a child, earning her first lead role at only ten years old. She gradually rose to the ranks of a TV star and recently starred in Netflix's "Cobra Kai." The show catapulted her to worldwide fame, thrusting her personal life into the spotlight, and the actress has been an open book.

Born in Pine Bluff, Arkansas, Mary Mouser drew her first breath on May 9, 1996. She's one of three siblings, all of whom are actors. Mouser debuted her onscreen career at five, appearing for a walk-on part in 2002's "Signs," alongside Mel Gibson and Joaquin Phoenix.

She's chiefly known for the role she took two years later in the mystery series "Without a Trace." In 2006, she landed the lead in the series "Me, Eloise" as the title character. Mouser achieved notable success in the TV industry in the following years but reached global renown as one of the stars of "Cobra Kai."

The multi-talented actress's fanbase grew exponentially from then, and her love life became a subject of interest. Contrary to celebrities who have guarded their privacy, Mouser has been an open book with her dating life. She was in a long-term relationship with another actor and was recently linked to one of her "Cobra Kai" co-stars.

Brett Pierce Was Mary Mouser's Boyfriend for 5 Years at Least

Brett Pierce is an actor best known for starring as Young Eddie in "A Million Little Things" and as Cuff in "Stuck in The Middle" alongside Jenna Ortega. He met Mouser in November 2015 when the two attended a mutual friend's party. Their attraction was immediate, and it wasn't long before their romance began.

As they went steady, Mouser and Pierce regularly appeared on each other's social pages. Mouser would even feature her beau in some of her YouTube videos. The young lovers celebrated their fifth anniversary in January 2021 in now-deleted Instagram tributes; however, it seems they may have ended their relationship.

Most of the posts in which they gushed about each other no longer appear on their respective timelines. The latest post that features Pierce on Mouser's Instagram was from December 2019. The starlet also kept older ones, including a sweet tribute where she called "cheesin'" with Pierce her "favorite hobby."

Pierce's latest post about Mouser, who was diagnosed with type 1 diabetes in 2009, is from August 2020. At the moment, the state of their relationship remains unclear, but fans suspect they're no longer together. Still, they are yet to confirm.

Could Tanner Buchanan Be Mary Mouser's Boyfriend?

Many fans thought so as the two share an onscreen romance on "Cobra Kai" beginning in the show's second season. The co-stars regularly spend time together, as they have revealed on social media and in interviews, either on set or during trips to Disneyland.

The dating rumors began when Mouser appeared in an Instagram update last December, depicting her and Tanner Buchanan on another trip to Disneyland in Paris. In a short thread of photos, one showed Buchanan giving Mouser a piggyback ride, and the two embraced in another.

Though the post surprised many, it turns out Buchanan and Mouser were only good friends. Even their onscreen relationship made them feel weird when it first began, as Buchanan once told Interview Magazine. He said their romantic scenes gave him the most anxiety, as he explained:

"When we had our first kiss scene in season two, they were asking us, 'Are you ready?' My heart was pounding, I was shaking. It just feels weird to go to that place, because we're such good friends."

Buchanan is known to be in a relationship with actress Lizze Broadway and has been for some time, but the couple has guarded their privacy. They rarely appear on each other's timelines, and the earliest post (perhaps the only one) where Buchanan refers to Broadway is from 2017. Broadway has also been spending time with her male friends. As of this writing, it's unknown if they're still together.