Ian in Your Ear Exclusive: Jay Sean's Hot PCD Hookup!

Credit: Stephen Lovekin/Getty Images; Michael Kovac/FilmMagic

The Pussycat Dolls' Nicole Scherzinger is already moving on after her breakup with Lewis Hamilton a few weeks ago -- and I found out just who she's getting down with. A source tells me exclusively that the singer, now working on a solo album, is quietly making more than just music with British R&B sensation Jay Sean.

My insider says they met backstage at the finale taping of NBC's The Sing Off (before Nicole's split) where Jay, who crooned last year's No. 1 megahit "Down," did a surprise performance with the winning group and Nicole was a guest judge.

"They exchanged [BlackBerry Messenger contact info] and since they are so busy and she was in a relationship, they kept in touch via BBM over the holidays and were just able to finally meet up in Miami a few weeks ago. He went down to rehearse and meet up with her," says my insider, who adds that things got even steamier in the studio and the twosome are now trying to find more ways to see each other. "It's very new," the source says.

When reached for comment, a rep for Scherzinger insists to Us the pair's bond is platonic.

"They've been working on a song together,” the singer’s spokesperson says. "It's strictly professional."

A rep for Jay Sean had no comment.