Who Is The Costume Designer That Had an Affair With David Harbour: 3-Year-Long Affair That Ruined Lily Allen’s Life

David Harbour and Lily Allen had been married since 2020, though their union came to an end in late 2024, with reports surfacing about Harbour’s alleged infidelity in their marriage. Apparently, the Thunderbolts* star had an affair with a costume designer for as long as three years while still being wed to Allen, who is the daughter of Keith and Allison Owen.

Per reports from the Daily Mail, Allen was left in ‘agony’ when she allegedly found out about Harbour’s being on the celebrity dating app, Raya. However, what she didn’t know was that Harbour had also been romantically involved with a colleague for at least three years, who…