My name is Allen I am 19 and have had sex once and every other time I try to have sex with a girl I only get semi-hard, I get morning wood and still get an erection when I go to masturbate but it takes physical stimulation, I can't with visual or mental anymore and on top of that my erection isn't even as hard as it was I would say about %80-%90, which I remember I could hold my damp towel on it once upon a time now it is barely holds its self up, I barely have the desire for sex now because of this and have had the problem for about 1-2 years now, i was a frequent masturbator since 13 years old and I use to get drunk almost every weekend for the past year although I gave up drinking a week ago and will only have the casual glass of port in future, otherwise I don't enjoy drinking, please help? Also I exercise and go to the gym I'm 175xm and 69kg.