The 23-year-old star, who split up with his long-term girlfriend Eleanor Calder three months ago, was spotted hand-in-hand with her as they walked through the backstage VIP area, reported Female First.
“He looked smitten and they appeared to be very familiar and cosy with one another. He was glued to her side, even though he had a few of his Doncaster mates with him,” said an eyewitness.
Bell is old friends with Tomlinson’ bandmate Harry Styles and One Direction’s hairdresser Lou Teasdale, and is the creative director of fetish lingerie brand Almeida, which was inspired by “Fifty Shades of Grey”.
Tomlinson, who was joined by his bandmate Niall Horan at the Worthy Farm festival, was earlier spotted with the model at The Libertines’ surprise gig on Friday night, July 26.
“They were very flirty and clearly knew each other,” an onlooker previously said.