I am sure my boyfriend has ED but we never talked about it?

I can't seem to get close to him. He is very aloof. Could this problem trickle into his emotional side of a relationship making him afraid of ANY form of intimacy? The affection doesn't seem to be there. We kiss hello, goodbye and goodnight when I stay with him, which I always initiate...no though. We tried once and he had to go get a little blue pill and that didn't even seem to help. He never tried again. He is wonderful and very handsome, but can't hold on to a woman. I think I know why now. It has been almost 3 months of dating and I am starting to get a lot of insecurities. I don't know what to do. Could he really care, but be afraid of getting close for fear of it leading into ?