Ashton Kutcher and Rihanna, Jennifer Lopez and Casper Smart, & More Odd Celebrity Rebounds (PHOTOS)

The Odd Couples

While Battleship star Rihanna denies any rumors that she’s dating Two and a Half Men’s Ashton Kutcher , we can’t help but wonder why she was seen leaving his house this week at four in the morning . Freshly separated from wife Demi Moore, Kutcher doesn’t seem like he’ll be settling down any time soon. But what about RiRi? Having recently been linked to once-abusive ex-boyfriend Chris Brown , the “We Found Love” singer was quick to deny rumors she was seeing Kutcher. But if the late-night visit does indeed turn into something more permanent, it seems like an odd coupling. We take a look at some of the strangest celebrity rebounds.