<<i'm 17 and never had a girlfriend or any kind of realtionship, i masturebate quite often,
I always get scared about how long i'd last in sex and think it would be to soon if you get me...>>
Why are you worried about having sex then. I am not trying to be mean or anything, but you don't have to worry about having sex right now if you aren't involved with anyone.
Also, most guys, that are young or haven't done it that much, don't last that long anyway. It frustrates the girls, myself included when I was a teenager.
Just worry about masterbating right now and you'll be fine. :smile: