Hottest Summer Movie Romances
Jennifer Lopez & Alex O'Loughlin, The Back-Up Plan
"I was like, Oh, my goodness, I'm kissing J.Lo!" Aussie star O'Loughlin tells Us. "But it's not like kissing your girlfriend. It's part of the job, and we're mates. Plus, she's another man's wife -- and I've become friends with him!"