Celeb Couples: Is It True Love?

They hold hands on the red carpet and cuddle for the cameras, but what's really going on between stars like Jay-Z and Beyoncé and Paris and Nick? With Valentine's Day approaching, we asked body language expert Tracey Cox, contributor to TLC's Date Patrol and author of Superflirt, to examine recent snapshots of celeb twosomes – read on to find out how hot (or not!) their love really is.

NAOMI WATTS & HEATH LEDGER

Back together after a brief split, Naomi Watts and Heath Ledger appear happy, but Cox says it may be an act on her part. While Ledger's pose shows he's "looking off to the future," and his "nice and relaxed" smile means he's "happy to be back with her," she's "tense" and "stiff" and her "top lip is stretched high – a sign of a fake smile."