Nothing shocks when it comes to him anymore.

Jen Garner isn't thrilled that ex Ben Affleck is dating 22-year-old Playboy model Shauna Sexton, but she thinks it's also just par for the course these days, Us Weekly reports.

"Jen realized a long time ago that she cannot fix Ben and that his problems are not hers to solve. She’s not his babysitter. She just wants to protect the kids. But she does wish Ben would keep his life more private," a source dished to the mag.

"Of course she’s not pleased he’s dating a 22-year-old Playboy model. But she’s also not surprised. Jen has come to expect this from Ben. She’s not going to get involved. She can’t make decisions for him," the source added.

Good thing she feels that way, because the Oscar winner refuses to be controlled and is determined to make his own choices.

"He is happy being able to date who he wants and not feel tied down to a serious relationship. Lindsay was more serious about him. He enjoyed her company but was not looking for anything permanent now. Ben likes a woman with brains and beauty but he also likes to be free to do what he wants," another insider told People.

We bet Jen G is glad she didn't keep trying to make her marriage work!