If this happens his career will be over!

Ben Affleck is reportedly living in fear that his ex-fling Shauna Sexton will release a secretly recorded sex tape from their time together.

"She told Ben she didn’t need him, and she was going to be the next Kim Kardashian. He and his team took that as a threat that she has a sex tape," a source dished to Radar.

Making matters worse? The fact that the Oscar winner was so out of it when they started hooking up that he really has no idea what she could possibly have on him!

"He’s been given a stern warning that he can’t trust her. He was so off the deep end when he was with her, that she could have anything to leak – a sex tape of the two of them, Ben doing drugs or drunk, or him just saying stupid stuff he wouldn’t want anyone to hear,” the source added.

His new tactic is to keep leading her on so that she thinks she still has a chance with him.

"Ben originally ignored Shauna, but he plans to talk to her so she calms down. He’s letting her think a reconciliation is in the cards. Everyone’s worried about how much she knows. And she could know a lot, because for at least two weeks of their so-called relationship, Ben was off the rails," the insider explained.

What a nightmare!