We hope she enjoyed it while it lasted!

As Ben Affleck was being driven to rehab by ex Jen Garner yesterday, his Playboy model hookup Shauna Sexton was frolicking on the beach in Malibu in a thong. She knows that the paparazzi are following her every move, so she might as well get the maximum amount of attention while she still can.

The Oscar winner will be getting treatment for his alcoholism for at least a month, and we doubt his counselors are going to support him dating this chick when he gets out. Usually, people in early sobriety are discouraged from dating at all in the first year, so she shouldn't wait by the phone for his call.

It sounds like she's still holding out hope that he'll be interested, though! She allegedly hopped on her private Twitter to send the troubled star a message of support. "Healing is lonely. Hang in there!" she wrote.

We wouldn't be the least bit surprised if after he conquers his battle with booze, he tries to get back with Jen! She's been his rock, and once he has a clearer head, he's going to realize how stupid he was to ever let her go.