Mariah Carey and Nick Cannon's secret wedding in the Bahamas may have surprised fans, but it also caught someone else off guard – one of Cannon's ex-girlfriends.

"I definitely was shocked like everybody else," Christina Milian, who dated her Love Don't Cost a Thing costar in 2005, tells Rap-Up magazine in its Winter 08/09 issue, on newsstands Dec. 30.

"I was like, 'Really?' It just seemed like a weird match," says the singer and actress. “But I was happy for him. I always feel like Nick works hard to get what he wants, whether that be women – that's how he got me."

Milian, 27, who's in the studio working on her upcoming album tentatively titled Dream in Color, says she and Cannon "were so young" when they were together. She hasn't spoken to Cannon since he started dating Carey.

Looking back on their relationship, Milian says she has no ill feelings or regrets.

"He's a beautiful person," she says. "Regardless of what I felt in the past at the time, I actually forgive him and I'm very much over that."

On who inspired her to get back into music:

“I bumped into Janet Jackson at a club. We talked for an hour and I was telling her I don’t know if I’m gonna do this, and she was like, ‘Girl, do not let them stop you. I’m a fan and you make good music.’ She’s a person I actually looked up to growing up, so her telling me that really was the day I was like, ‘I’m not gonna let these people hold me down. It’s time.’”