Los Angeles, May 23 (IANS): Singer-songwriter Jason Derulo, who ended his relationship with Jordin Sparks 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.

"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," Derulo said.

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

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

While the “Talk dirty to me” hitmaker is still happily single, Sparks recently confirmed she is dating 22-year-old rapper Sage the Gemini.

Asked about photographs of them on her photo-sharing website Instagram feed, Sparks 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!"