Should i ask him to be my boyfriend?

I have been going out with this guy for over 2 months now. We decided to keep it casual and he told me he is scared of commitment. I have started to develop feelings for him and i do not know if he feels the same way. We had sex at multiple occasions now. I do not if i should tell him that i love him and ask him to be my boyfriend. I do not want to loose what we have just in case he is scared off by my confession.