I am having this problem and I have no idea why. I was a virgin until I met my current girlfriend. She is my first partner and we have had actual sex 4 times w/ my getting off. But for some reason I am like having erectile dysfunction. Say we'll be making out and getting naked and I'll be hard. But when we get around to putting the condom on and then when I go to stick it in her I'm soft by that time and sometimes i can't get real hard again. Attraction is not the problem. She is very attractive to me. But of course she thinks she is the problem and gets afraid I'm losing interest in her. I honestly have no idea why all of a sudden go soft. Being nervous is probably my best guess. I used to be nervous about how I would perform and now I get nervous about going soft. A) Why am I going soft and B) What can I tell her to keep her from getting mad at me and to assure her I still love her and she does it for me?