im a bit embarrassed by this fact but i am 19, will be 20 this year and i cant seem to keep an erection for my girlfriend, i have looked it up and some reasons could be related to stress or too much masterbation, but i was just wandering if there is any way i can help this. i mean it is still quite new to me as i am in my second sexual relationship however before my current girlfriend the only time i had sex was when i lost my V. could this be a reason? if you could answer in any way you can i would be grateful, thanks.