My penis erecte when i rub around it, when i see porn or talking with a girl over phone, otherwise it stay very small and soft, before 2yr it was very big and hard in a normal situation, but now it has gone, i am very afraid for this, whenever i see my penis i feel very depressed, and thinking that my life is end,also my sexual desire decreased, btw, sometime i feel that i am sexually ok, my question is what type of problm is facing me?? And what is the cause of my problem, and how to cure myself??? Plz plz plz plz help me sir my parents force me to marry, i dont want to ruin my partner s life...