Carrie Underwood: "I've been cheated on a time or two"

Carrie Underwood has confessed that she's been cheated on "a time or two".

The former 'American Idol' winner -- who has been linked to such famous men as football star Tony Romo and Gossip Girl's Chace Crawford -- says she's experienced heartbreak at the hands of an unfaithful boyfriend.

"I've been cheated on a time or two. It's tough," she tells InStyle magazine, but remaining mum on the culprit. "I wouldn't recommend doing any property damage, though," she laughs, a reference to her Grammy-winning song "Before He Cheats" about a woman who trashes her boyfriend's truck.

"Now I'm to the point where you get one shot. Life's too short," adds the 25-year-old singer, who says that ice cream is her way of dealing with a broken heart.

"I'm a 'let it go, move on' kind of person. And ice cream is my friend. If anybody sees me eating a sundae and I look unhappy, something bad has happened," Underwood tells the magazine. "I am drowning my sorrows in fudge and caramel and whipped cream."

The Grammy Award-winning star also admits that she struggles with body image. "I think about what I look like probably more than I should.

"But I think everybody is her own worst critic," she says. "Some days I step out of the shower, put my lotion on, and I'll be like 'Ugh, ew, ew'."

She also confesses to keeping a food diary and never leaving the house without make-up. "I'm OCD like that," she explains. "I count calories, fat and fiber – which is important in making you feel fuller faster – and protein, especially when I'm working out."

And the reason for her strict diet regime? "If I put on five pounds, it's noticed immediately," says Underwood.

Still, she says, "I'm content with 90 percent of me. I like my teeth. Sometimes I wonder if my orthodontist realizes how important he was."