A few weeks ago, we told you that Laura Prepon and her BF of seven years, Chris Masterson broke up. Well, the October Road star must have taken the split well 'cause she's been seen flirting it up with Sex and the City hunk, Jason Lewis (who used to date Rosario Dawson)!

"The pair went to all the parties together and exchanged digits at the end of the first events," a source tells Star magazine. "Although I didn't see the two lock lips, they were very cozy and whispered into each others' ears when they spoke." And another source spotted the two "dancing and having a great time together" at a party.