Is my ex trying to make me jealous after I told him I still have feelings for him?

YAHOO Asked: Is my ex trying to make me jealous after I told him I still have feelings for him?

He was my first love, and he knows this. He also knew how much I liked him, I would do anything for him. We never had sex when we were in a relationship. We've been broken up for over a year now. He was the biggest jerk to me, I ended up shaking with anxiety whenever I'd go to see him, because I'd be afraid he'd leave me. It wasn't healthy. We lasted 2 months because he broke up with me for no reason. It took me 6 months to get over the way he treated me. Back over this previous summer, he told me he wants to stay friends because he misses hanging out with me. I rejected it, because I realized how far I came in life and I was happier without him. In October he REALLY wanted to hang out, so we did dinner. I ended up getting old feelings for him back. He kept telling me he didn't know what he had until it was gone, didn't want to lose me as a friend, and wanted to keep me in his life. I explained to him it's hard for me because I get jealous of the girls he talked to on Facebook. he told me they were just classmates. So after I basically confessed to him I'm still in love, he goes and makes his Facebook picture of them hugging, and she's also been posting on his wall saying things like, "I'm so glad we're together, I'm so glad your picture is of me and you" and it sounds to me like she's doing it on purpose, but I don't even know her. He hasn't bothered talking to me in like 3 weeks, what a "friend". I had to remove him on Facebook again. So did he just want to use me as a back up? Am I stupid for letting him back into my life? Now I have to get over this again.