updated 04/08/2010 AT 9:00 AM ET
•originally published 04/08/2010 AT 9:10 AM ET
She has a hit song about not “phunk”ing with someone’s heart, but Fergie confesses she was once guilty of doing just that.
“When I was younger, I used to be the cheater,” the Black Eyed Peas singer, 35, tells Elle in its May issue, on newsstands April 14. “I’m not talking about going all the way – I wasn’t doing that in high school!”
She explains: “I’d have boyfriends and then spring break would come around and I’d be a little bit naughty.”
But the performer’s relationship style has, of course, completely changed, especially since marrying Josh Duhamel in January 2009. “I’m a relationship girl, a romantic,” she says.