Similarly to her relationship with the talent agent, the actress kept her health issues tightly under wraps before she died Wednesday at age 39.

Michelle Trachtenberg was in a long-term relationship with her boyfriend, Jay Cohen, at the time of her death in February 2025. In October 2020, sources exclusively confirmed to Us Weekly that Trachtenberg had been dating her talent agent, Cohen, for “over a year.”

Hollywood grieves the untimely death of Gossip Girl star Michelle Trachtenberg, who was in a secret relationship with film producer Jay Cohen. Explore their romance and Trachtenberg’s remarkable career.