What does his silence mean?

Hey,

So I used to be "friends with benefits" with this guy. I actually did not know we were that until after when I asked about being serious and he made it sound like a joke. Anyway, we tried to be friends later on. We ended up making out one night. He told me he wanted it to stop because he did not want to hurt me again. I ended up telling him that I thought he treated me horribly before. I had a crush on him and he made it some messed up situation. He makes it sound like a joke that he could never like me and I told him that makes me feel like he only thinks I am good for my body. He didn't respond to me message... My friends say that maybe he actually feels bad...or is his silence just showing that he really is a jerk?

It means he doesn't care about you. Pretty consistent with his other actions.