Celebrity breakups
Ryan Reynolds & Rihanna are both single again. Who else is back on the market?
Oh, how we love the drama of celebrity romances -- and we're equally entranced when famous couples call it quits. We saw some jaw-dropping breakups in 2010. As we enter 2011, we thought we'd take a look at the couples who have split in the last month or so.
See if you can name the better half of the couples in question, including:
