Problem with my foreskin not retracting when aroused.

Ok, so ever since I was young, around 13, I found out what masturbating was. I was over joyed at the sensation and regrettably got carried away. Because I was so young I didn't really know how to do it right so I started from the bottom pulling the skin up, as it was to painful to pull down. Now at an older age I can comfortably pull my skin back with no pain, but it doesn't retract by itself. So when I masturbate now the skin is always covering the head. Now when I touch my head its way to sensitive, almost to the point of pain. I've had sex and the skin would naturally pull back as I entered and felt fine. However for blowjobs and handjobs its to sensitive and it makes me self conscious about being with girls.

So to conclude, it there anything I can do (other then circumcision) that can make it less sensitive and a little more normal.