I've know this guy for about a year now. I never liked him as more than but one day I decided to give him a chance and he's been the sweetest. One night we hungout and ended up having sex. (If I could go back I wouldn't have done it.) He said he wanted to be with me and that he was going to take me on a date last night(Saturday). I was waiting for him to text me with the plans but he didn't text me so I texted him and he said he's busy and can't hangout. He's been acting really weird ever since we had sex and I'm starting to think he was just using me. I don't want to automatically assume that he is and I want to give him a chance but I'm scared of being left. Should I just forget him or don't worry about it and wait?!