The Talk Dirty singer sparked rumours he was dating the model, when he posted a photo of the two during a night out in London on Friday (20Nov15), as part of the 'Flashback Friday' social media trend. He captioned the snap, in which he is pictured with his arm around Daphne as they raise a toast, "#FlashBackFriday #London #GoodTimes @daphnejoy".

The image has since been deleted from Instagram.com, but a source told Eonline.com the pair are dating. However, Joy has taken to Twitter.com, to insist she is "single".

"...being at the same place and time doesn't mean your an item...," she writes on the social media site.

"If you follow me on any of my social media I was already in London for work, and had a casual dinner w (with) friends....," she adds. "I'm single, please don't get too wrapped up over one photo."

Daphne shares a three-year-old son, named Sire, with 50 Cent, while DeRulo split from fellow singer Jordin Sparks last year (14).