I dumped my friend because he was selfish but now i miss him should i just get over it?

I know it may seem strange but I am 30 and he is 19. We became friends and then we became attracted to one another. I told him I just wanted to be friends because I didn't see it working which was fine. Then he said that he was best friends with a girl he slept with and that he also cares about her, he also does not want to end his friendship with her, he just blurted this out casually during a conversation. It made me angry because I felt disrespected; he was pursuing me and this whole time he is best friends with his fk buddy. I'm glad I found out now and not after something happened between us. I felt so disrespected and thought he was being so selfish that I ended the friendship, but now I miss him because we had so much in common and used to talk a lot. I'm worried that if I become friends with him again that the attraction will grow bigger and I'll end up doing something I'll regret e.g get into a relationship with someone too young. Should I just get over it?