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.

Harbour sported an all-black look at the 2025 Critics Choice awards just days after news of his split from Allen broke

In recent months, rumours have swirled online suggesting the Smile singer and Stranger Things actor were having marital problems. And in a report published by People on Monday, sources claimed Allen and Harbour have separated after four years of marriage.

David Harbour made his red carpet return at the Critics' Choice Awards in California following news of his marriage breakdown to Lily Allen and seemed to confirm the news by not wearing his ring

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.

Covered in vibrant, floral wallpapers in every room, topped with crystal chandeliers, odd portraits, and more. This home became a hit on everyone’s Pinterest boards. (Plus, it had so many amenities like a gated backyard with a sauna, walk-in closets, long bookshelves, and more.)

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

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,

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

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.