A source confirms the "Trumpets" singer is in a new relationship with model Daphne Joy

Credit: Marc Piasecki/WireImage; Amanda Edwards/WireImage

Sorry, ladies! Jason Derulo is off the market again.

The singer is currently seeing 50 Cent’s ex-girlfriend Daphne Joy (the exes have 3-year-old son Sire Jackson together), a source confirms to PEOPLE (the relationship was first reported by E!).

Derulo posted an old photo of him and Joy earlier Friday on his Instagram account, captioning the photo “#FlashBackFriday #London #GoodTimes @daphnejoy.”

“I’m just having a great time,” the star – who split from longtime girlfriend Jordin Sparks a year ago – told PEOPLE in June of flying solo. “Dating is a little too formal for what I’m doing right now.”

He did admit one deal breaker was “messy teeth,” though. “If the grill has spaces and different colors, it’s not my vibe,” he said.

Luckily, Joy’s smile looks pretty flawless!

A rep for Derulo declined to comment.