Star Couples: Will It Last?

Do Ben Affleck and Jennifer Garner have what it takes to stay together? You be the judge: Cast your vote on them, Beyoncé and Jay-Z, Cameron and Justin, and others. By Serena Kappes

MATTHEW MCCONAUGHEY & PENELOPE CRUZ

Sweethearts Cruz and McConaughey (in West Hollywood on Jan. 20) have taken their relationship public: The pair, who met on the set of the action flick Sahara, attended Prince's exclusive Golden Globes afterparty together, their first high-profile event as a couple.