Lily Allen and David Harbour are separating four years after they married in September 2024, multiple sources confirm to PEOPLE. "Her marriage has been crumbling," an insider tells PEOPLE exclusively,

Lily Allen and David Harbour are calling it quits after four years of marriage, multiple sources have confirmed to People.

David Harbour, known for his role as Jim Hopper in Stranger Things, and his wife, singer-actress Lily Allen, have decided to end their marriage after four years. The couple, who married in 2020, have been facing relationship challenges and have mutually agreed to separate.

Lily Allen and David Harbour’s marriage has reportedly come to an end after four years, according to People. The news comes after months of speculation surrounding their relationship, as the couple—who once seemed inseparable—have been spending more time apart.

According to the insider, the breakup has also been "very hard" for Lily's daughters, 13-year-old Ethel and 12-year-old Marnie, whom she shares with ex-husband Sam Cooper. And in a 2022 interview with GQ Hype, the actor called Lily "a really extraordinary person" and remembered thinking she was "somebody I want to be around" by their third date.

Stranger Things star David Harbour seemed to confirm rumors that he and his wife Lily Allen have split, as he arrived at the Critics' Choice Awards in Santa Monica, California, without her.

Stranger Things star David Harbour attended the Critics Choice Awards 2025 in Santa Monica Feb. 7, marking his first appearance since his reported breakup with wife Lily Allen.

David Harbour has seemingly confirmedhis split from Lily Allen with a solo appearance at the Critics Choice Awards.