Cooper Koch confirmed he was in a relationship in October 2024. Here's everything to know about Cooper Koch's boyfriend Stuart McClave.

Phil McCarten/CBS Cooper Koch had his boyfriend, Stuart McClave, for support while celebrating his first nomination at the 2025 Golden Globe Awards. Koch, 28, and McClave, 37, made their red carpet debut while posing for photos at the Beverly Hilton in Los Angeles on Sunday.

The first-time Golden Globe nominee, who earned a nod for his role in 'Monsters: The Lyle and Erik Menendez Story,' revealed to Vanity Fair how he prepared for the ceremony, which included banishing his phone for three days.

Cooper Koch gushed over his boyfriend Stuart McClave for supporting him and being "the best" at the 2025 Golden Globe Awards on Jan. 5. The 'Monsters' actor, who isn't married but wears a ring, said his partner also helps him stay "grounded.

The Monsters: the Lyle and Erik Menendez Story star is nominated tonight for his role as one of the infamous Menendez brothers.

But it seems like Cooper Koch's perspective on sharing his relationship with the public has changed, as Koch not only brought McClave to attend the Golden Globes with him, but posed for several pictures alongside his boyfriend.