I am a 33 year old man who suffers from premature ejaculation. Since 11-12 yrs old I masturbated I'm not sure how much but it was more than 3 times a week for at least 15 yrs. I did not start having sex until I was 18. Things were great from 18-20, I was in control and lasted as long as I wanted, then at 20 I started suffering from premature ejaculation. Over the years masturbating became addictive, although for over a year I reduced the frequency to 1-2 a week, however I have a fiancee and we also are having sex in addition to this. Within the last month I have stopped masturbating altogether and we only have sex now. My concern is that for years the muscles on the left side of my penis spasm when I am having sex, this makes my ability to last hard to control. Even when I am not having sex and I am not erect the penis muscles will often times spasm, with not much stimulation. What is happening here and what can me done to regain normal muscle/nerve control in my penis that ultimatly will allow me to control orgasm.