Hi I am 34 and am a virgin, but not for lack of trying - I've never been able to get an erection hard and long enough to sustain an intercourse. My girlfriend is understanding but I know it is unfair on her. As soon as I try to insert, I lose the erection. And find it hard to get back. 1. I used to do prone masturbation from the age of 14 or so till 26. After that, I have masturbated the regular way though. 2. I was totally addicted to porn (seeing videos and reading erotica) from around 26-32 where I used to do it almost daily. I have mostly stopped it for the past two years. At this point, I get hard and can easily masturbate to porn and when I am with my girlfriend too. (I guess I don't need hardness to last for masturbating) But every time we try to have sex, I lose my erection after 30 seconds or so and have a lot of trouble getting it up again. And I lose the stimulation in my mind and the excitement as well. I am not overweight, I don't smoke or drink and am otherwise normal. I get occasional morning erections (once or twice a week) Would this be an indication of PIED? Would I have done some physical damage to the nerves etc by proning (though I haven't done it in years)? Would really appreciate any tips, I badly want to become normal. (Sorry if my post was a bit too graphic.) Thanks!