What should I think or do? Am I just getting played or am I overthinking everything??

Okay so there is this guy I've been talking to for 6 months now and I'm just so confused. We have talked ever since I met him, there hasn't been a day that we haven't talked. I stupidly had sex with him the first time we hung out and I didn't think that matter until now cause he use to hang with me quite a bit and say sweet things to me but then out of the blue we started hanging out less and less and I was the only one putting effort in. He would tell me that I'm overreacting and that he is just busy so I quit bothering him about it and things started going good until I went on vacation. While I was away he told me how he missed me and couldn't wait to spend time with me and took screenshots of me and told me how I was cute and missed me but then when I got back he didn't even want to see me. He kept making excuses but I didn't let it get to me cause he said we would see each other that weekend. So when the weekend rolled around I woke up to a text saying that I'm his best friend and that he found someone new to talk too that he was interested in. I was crushed and I told him how I felt and he just said he just wanted to be friends but still hang out and talk cause he didn't want to lose me. So I said whatever got over it and still idiotically still talk to him.. Anyways one night I was having a problem to the point I was crying and he was there to help me and he told me to come over to cuddle and talk so I did. I tried keeping my distance but then some how it lead to us having sex and we cuddle and hung out a little after that and then I went home. The next day I didn't want to ask him about it cause I knew it meant nothing but I had hope that maybe it did so the day went on and I was hoping he would ask me to hang out but towards the end of the day my text me a pic of the guy in talking to with another girl. So I finally asked him what that was about he said that he didn't mean for us to have sex. So I asked him that fine but why am I around if he has another girl