Lily Allen spotted on date with Stranger Things actor David Harbour

Lily Allen and Eleven’s dad in Stranger Things — David Harbour — have added fuel to swirling romance rumours after being spotted out together in London.

Things are heating up for Lily Allen and Stranger Things star David Harbour.

The couple were spotted by an eagle-eyed fan at a boxing match together in London over the weekend, Page Six reports.

“@DavidKHarbour When on earth did this happen!?” the fan wrote on Twitter alongside a screenshot of her TV screen showing the couple at the event. “I’m baffled! Hahaaa #LilyAllen Thought I knew all the gossip!”

@DavidKHarbour When on earth did this happen!? 🤔 I’m baffled! Hahaaa 🤣 #LilyAllen Thought I knew all the gossip! pic.twitter.com/DxDndVPo1M

— EmmaGee (@GeeEmma20) August 31, 2019

Earlier on Friday, Allen, 34, posted a photo of herself at a tube station waiting for the train to take her to the match at the O2 Arena to watch Vasily Lomachenko and Luke Campbell duke it out.

“Fight Night,” she captioned the pic.

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Allen and Harbour, 44, first sparked dating rumours in early August when they were spotted in the West End seeing a performance of The Lehman Trilogy at the Piccadilly Theatre.

David Harbour attends Netflix's Stranger Things 3 premiere. Picture: AFP.

The Smile singer split from her ex MC Meridian Dan earlier this year, while it appears Harbour split from girlfriend Alison Sudol sometime after Mother’s Day, which was the last time she posted a photo with him. After Allen and Harbour were photographed together, Sudol, 34, posted a cryptic Instagram photo about letting go.