Im so sad i neeed to vent

So I started talking to this guy almost a year ago, we’ve been on and off in our relationship but not too long ago we got back but didn’t make it official again, we had sex it was so unexpected.. I feel really dumb bc now he’s not talking to me and I feel like he just used me ! Worst thing is I was a virgen nd I lost my virginity too him .. :( now i can’t get over him and wished he still cared for me. A few days ago we hung out and he was acting as if nothing was wrong between us. He wanted to hold my hand and he tried touching and kissing me but I backed off. I felt like I was vein molested and idk I felt that way if I really still like him 😫