Photo SpecialStars' Summer Lovin'
Check out the hottest celebrity romances of the season (including The O.C.'s Mischa Barton and beau Brandon Davis). By Serena Kappes with Laura J. Downey
More from PEOPLE
MICHELLE WILLIAMS & HEATH LEDGER
Though she doesn't play Ledger's love interest in their upcoming film Brokeback Mountain (Jake Gyllenhaal gets that honor), former Dawson's Creek star Williams, 23, clearly made an impression on Naomi Watts's ex-beau, 25 (away from the movie's set in Calgary, Canada).
