Carrie Underwood: 'Fame Makes Dating Difficult'

Carrie Underwood says being famous makes dating harder.

"You never really know why somebody wants to be around you, or if they do genuinely like you," Underwood -- the winner of the fourth season of American Idol -- tells Allure magazine in its September issue. "I wish everyone had a label on their forehead so you could automatically tell their intentions. Sometimes you just wish that no one wanted anything from you."

The multi-platinum selling country star, 25, recalls a time soon after her success on Idol when a guy who'd ignored her in college -- clearly enamored by her newfound success -- called saying that "he wanted to explain."

And, earlier this year, Underwood split from Gossip Girl's Chace Crawford via text-messages. "We didn't have a fight. No one cheated," she insists. "It plain didn't work."

And on ex-boyfriend Tony Romo -- who is now dating Jessica Simpson -- Underwood claims the relationship wasn't serious, saying, "We were both small town people doing very big things, and we relied on each other, dealing with fame."

Underwood also revealed that an old boyfriend once cheated on her, but refused to elaborate further. "I don't want to name names, even though he probably deserves it, but he fooled around," she said.

"Oh, yeah, and lied! It was one of those things that everyone knew but me. He was a good liar. Nobody would come out and tell me. And he seemed perfect in every way.

"I'm sure we've all run into these people, whether they're friends, boyfriends or girlfriends."