United Kingdom, Feb. 8 -- Britney Spears has claimed she once "made out" with Ben Affleck.

The 'Toxic' hitmaker shared a photo of herself posing with the 'Gone Girl' actor and award-winning songwriter Diane Warren in the summer of 1999 as she teased the "crazy" anecdote in a since-deleted post on Instagram.

Britney wrote: "Cool pic of me and Ben Affleck and Diane Warren years ago!

"He's such an amazing actor. Did I fail to mention I made out with Ben that night... I honestly forgot... damn that's crazy!

"Wish I could tell you guys the story that happened before that! Oh dear, I'm just being a gossip girl!

"Psss I actually forgot [laughing mojis] (sic)"

When the photo was taken, Ben was dating Gwyneth Paltrow, while it is unclear if ...