Turns out Bradley Cooper and Olivia Wilde's recent flirt-fest -- at NYC's Cinema Society afterparty for The Hangover Part II -- wasn't a fluke.
"They're definitely hooking up," a source tells the new Us Weekly. The newly single stars met last year when Wilde, 27, read for a part in Limitless, and have reconnected in the wake of their high-profile breakups. (In March, Wilde filed for divorce from husband of eight years Tao Ruspoli; Cooper and Renee Zellweger ended their two-year relationship that same month.)
Wilde cozied up with Cooper, 36, at The Hangover II's May 23 bash -- first gabbing in a VIP booth and then hanging out on the rooftop. The House: MD star even got a little territorial.
"Olivia acted jealous when other girls came up to him," the insider says. Just two days before, the duo left together from a Saturday Night Live afterparty, where Wilde had caught up with recent fling Justin Timberlake.
"She thought going with Bradley would make JT jealous," adds the source.
Whatever her motives, Wilde -- who has also been seen with Ryan Gosling post-divorce -- is loving the attention, another pal says.
"Guys have been coming after her since the moment she filed for divorce!"
UPDATE: Wilde's rep tells Us: "Olivia is single and not dating Bradley."