Should I work it out or move on?

[destiny4l]

To make a long story short me and my child's father live in two different states, I recently moved back home, and did I also mention we recently broke up. Basically I had a conversation on Facebook with a male I went to college with, he asked how I was and that he wanted to meet my child's father and our child, he also said '' love ya and god bless'' and most of my friends tell me they love and miss me in a friendly way. Well my ex saw the post and went on about who was this guy and did we date, I said no, he's just being friendly. He told me that I was a slut and I cheated on him. At this point his insecurities have drove me insane. I'm a very social person and I know a lot of people which he already knows. My thing is he seems possessive and controlling. As if I have no right to talk to other people.