AceShowbiz - British pop star Lily Allen was devastated when discovering her husband, "Stranger Things" actor David Harbour, secretly used the celebrity dating app Raya, but his infidelity reportedly extended beyond his matches on the online app.

According to Daily Mail, 49-year-old Harbour had been involved in a long-term affair with a younger colleague. A source claimed the actor had cheated on his wife for at least three years with an unnamed costume designer he met on a film set. "David cheated on Lily. They met on a movie they did together," the insider said.

While Allen wasn't aware of their affair, it was reportedly an open secret on set. "They weren't very secretive about their relationship," the source said, adding that Harbour flew his lover to Atlanta to keep him company during the filming of "Stranger Things" in 2024.

This revelation came just after Lily Allen called out older men who "liked them young." In the latest episode of her podcast "Miss Me?", she remarked, "Aging is particularly inconvenient if you get your validation from the attention of men, which I do.."

She added, "Older women can see the unattractiveness of men better than young, dumb women, which is why, essentially, men like them young and dumb."

Amid her marital strains with Harbour, Lily Allen said she was in a dark place and had to seek professional help last year to cope with her depression. "I did a lot of group therapy and some individual therapy and I just, I needed some time and space away from everything," she noted.

Lily Allen and David Harbour tied the knot in Las Vegas in 2020 after meeting on Raya. Allen is a mother to two daughters, Marnie Rose, 12, and Ethel Mary, 13, with her ex-husband Sam Cooper.

The grim revelations serve as a stark reminder of the complex and often tumultuous nature of celebrity relationships, where the glitter and glamor can conceal underlying troubles.