NEW YORK — Singer Lily Allen and “Stranger Things” actor David Harbour have listed their tony Brooklyn townhouse for $8 million, barely two days after her newest album and its strongly implied cheating allegations outed him as her reverse muse.

The ex-couple hopes the Architectural Digest-featured Carroll Gardens digs will fetch a cool $7,995,000. They paid $3.4 million for it in 2021 and hired AD100 designer Billy Cotton and architect Ben Bischoff of MADE for a complete redo, according to the listing at Compass Real Estate. Built in 1899, the four-level, 3,960-square-foot home boasts five bedrooms, four bathrooms, a gym and a backyard, and is “nestled on one of the most sought-after blocks in Carroll Gardens,” according to its description.

“West End Girl” dropped on Friday, Allen’s firs

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