okay this might be long but i wanna include everything so someone can hopefully help. I'm 23 years old and have been with my gf for only about 3 months now but i am absolutely in love with her. I think shes gorgeous, i'm very attracted to her and all that. Before her i hadn't had a serious gf in a few years. At first we had a great sex life, had sex very often, sometimes a few times a day, and i never had a problem getting and keeping an erection. Sometimes sex only lasted about 5 minutes because i would ejaculate pretty much right as we started having sex. Suddenly a couple weeks ago i had one instance in the shower where we tried to have sex and i started to lose my erection before penetration and was not hard enough to have sex. It kind of turned into this whole issue where she thought i wasnt into having sex with her or wasnt as attracted to her anymore, and the next couple times we would try to have sex i either could not get hard at all, or would get hard but then lose it before penetration. We had another talk and i told her i'm not sure what it is but it has nothing to do with her, but now every once and a while i just cant get hard or i cant keep an erection while we're having sex, especially in the shower now. Theres even been a couple times where i lost an erection while she was performing oral sex. I don't want her to think that its because of her and i feel like shes disappointed in our sex life recently, but I'm 23 years old and i never heard of someone as young as me having problems getting an erection so i'm getting worried because i dont know what it is. If anyone can give me any info or help with this i'd appreciate it!!