Me, and my ex had been having sex. I told him I was having feelings. He said he didn't want a relationship, he was working on himself so, I stopped sleeping with him.

A couple of weeks later he calls again asking, who I'm sleeping with, and we were high school sweet hearts. What's the deal? Am I around for sex? Does he want me back? Help!!

He is feeling jealousy, and he does have a feeling for you in the corner of his heart. But that will wither off real soon. Don't waste your feelings and time for someone who can't take any responsibility and commitment.

You aren't high school sweethearts because he doesn't want a relationship, remember?

No free sex, and yes he wants you back for sex.

Yup, he's jealous. He doesn't want you, but he doesn't want anyone else to have you either. He also doesn't want the uncomplicated sex to stop. I mean really, he gets to have sex with you, and he doesn't have to commit. It's win win for him.