Recently I tried to have sex but I was so tired and nervous that I couldn't do it. The girl was the same one I lost my virginity too and I really wanted to make things work with her. I now realize I can't have a sexual relationship with her unless she loves me (and wants what constitutes a marriage) but I'm scared that there might be something wrong with me. I have this feeling that says I should try to have sex, just to show myself I can. I have nothing wrong with me anatomically except when I feel like the person I am with isn't really into it I have trouble maintaining my arousal. Perhaps it was just very late (it was 4am) and I had had a few drinks that night. I just want to know if you think this is normal and should I stop worrying about it and just wait for the girl that loves me and really wants me?