If this is true, he can kiss his career and credibility goodbye!

Ben Affleck is nearing the end of his treatment in rehab, and the actor reportedly has some big plans for the future... involving popping the question to Playboy model girlfriend of just one month Shauna Sexton!

"He’s totally in love with Shauna and wants them to live together the moment he’s home, then he’ll make it official with a proposal," a source dished to Radar.

"They’ve talked about this extensively and Shauna’s full on board with it. To her, dating Ben is like a fairytale and she’s in this for the longterm," the source added.

Hopefully Jen Garner steps in and knocks some sense into him, if this is really his bright idea!

We all know the Oscar winner has a history of doing crazy things when he's in love. Let's not forget this cameo he made in ex-fiancee Jennifer Lopez's "Jenny from the Block" video!