After nearly four years of dating, Ryan Phillippe and Abbie Cornish called it quits. If reports about Phillippe's infidelity are to be believed, then Cornish should have adhered to the adage, "If he cheats with you, he'll cheat on you."

Last May, Page Six reported that Phillippe was partying with several blondes in Cannes -- and Cornish was nowhere to be seen.

In December, The National Enquirer (via The Insider) claimed that the 'Bright Star' actress was fed up with his philandering ways. "Ryan and Abbie are on the rocks because he's back to his horndog ways. He's been hitting the clubs regularly and desperately trying to hook up with almost every young woman he meets. His womanizing has gotten so out of hand, it's like Abbie never existed," a source said.

But should Cornish be surprised? Not if she stops to think about how she and Phillippe came to be.