Hollywood serial daters Jake Gyllenhaal and Rachel Bilson are reportedly a couple, according to new romance reports.
Gyllenhaal, who has dated Reese Witherspoon and Kirsten Dunst, and Bilson, who recently split from fiance Hayden Christensen, are an item, according to HollyScoop.com.
A source close to the couple tells the website, "They're trying to keep a low profile but they're definitely dating."
Bilson also dated her The O.C. co-star Adam Brody.
