Help

I 18F and my bf 23M have finally started touching each other for the first time. He asked if I would suck his dick and I did and I was down there forever and he wanted to do something else, then later asked if I wanted to try again and I did for a long time but still couldn’t get him to cum at all, he even got soft. I was pretty upset and said sorry. With guys before they would cum in 3 minutes but he just couldn’t. Then he told me it’s probably because of his ADD medication and that he has watched to much porn in his past that it has ruined his libido and that it’s not me. I’m kind of shook and don’t know what to do. He likes bdsm and stuff like that so I guess I should have realized he had been a porn addict, and he made sure to tell me he doesn’t watch anymore. Can anyone help me? This is my first real relationship and I want to be able to make him feel pleasure…