Am I just overreacting?

Hon ladies, I honestly just need some advice.. I started talking to this guy that I met on a kinky website. Because of where we met I let him know that I don't do casual and like to date for a while before sex. Well we hung out and he kept kind of pushing it but saying that if I said no he'd understand. Except I said no and he'd wait and then do something again until I just kinda felt like I'd say yes and get it over with and we had sex. Now I'm having trouble because I tried to tell him that I was really upset after but he's saying he would've stopped if I told him to and that I shouldn't let one thing stop this relationship. He's really nice to me and I didn't say no. The sex was really good too, should I just get over myself and date the guy? Thanks for reading