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,

The couple’s extensively renovated Brooklyn townhouse includes a windowless pink primary suite that Allen called a ‘bed womb.’

For several years, the pair appeared to be the picture of wedded bliss, settling down with Allen's two children, Ethel and Marnie, in a Brooklyn townhouse that the duo completely transformed into a "weird and wonderful" paradise filled with eccentric decor.

The “Smile” singer and the “Stranger Things” star, who met on a dating app, have called it quits after tying the knot in Las Vegas in 2020.

"Smile" singer Lily Allen and her husband, David Harbour, best known for his role in "Stranger Things," have ended their four-year marriage. Multiple sources have confirmed the split, though the couple's representatives have yet to respond publicly.

Lily Allen has been in rehab for several weeks and is now planning to return to work, after reports that her husband David Harbour has split from the singer.

Lile Allen is "devastated" after she and husband David Harbour separated, an insider tells PEOPLE exclusively. The "Smile" singer and the 'Stranger Things' actor were first linked in January 2019, and they married in September 2020.

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.