Jason Derulo gets ''tired of playing nice'' about his split from Jordin Sparks.

The 'Talk Dirty' hitmaker, who ended his relationship with the 25-year-old singer last September after three years of dating, believes he was ''gentlemanly'' about their breakup, even though she later accused him of leasing a BMW he gave her instead of buying it.

But he said: ''I do get tired of playing nice. Especially when people think I did something wrong, or that she broke up with me. But it's so behind me.''

The 25-year-old star isn't looking for a new girlfriend because he is ''married'' to his career, but claims his love life is like a ''a deck of cards'' at the moment.

He told Billboard magazine: ''You can't pull me out of the studio. Songwriting is a muscle. The more you do it, the better you get at it.''

While Jason is still happily single, Jordin recently confirmed she is dating 22-year-old rapper Sage The Gemini.

Asked about photographs of them on her Instagram feed, she said: ''I think they're pretty obvious. We're having fun. He's a really good guy, and the pictures speak for themselves ... I don't just kiss people!''