When I masturbate, I can cum really easily. I'm 20 now and have a girlfriend and she always gets sadish when I don't cum. I always tell her that Im just afraid of having kids. I came once during sex, but now cant do it at all. I can't feel anything with my head when I'm inside her. and i dont know if it matters but I'm not circumcised.
you really need to read this website called healthy strokes see if prone masturbation is the problem
Although about 90 percent of males masturbate by hand, about 5-10 percent masturbate by lying face down and thrusting the penis into or against the bed, pillow, or something else. Although masturbation is normal, healthy, and fun, prone masturbation causes severe sexual dysfunction in most males who practice it. This web site describes prone masturbation and the problems of its practitioners and offers case studies and approaches to becoming cured.
thats what i read somewhere, where excessive masturbation causes this problem. I havent masturbated in few days, and I'm planning not doing it for a long time just to see if it fixes the problem.
Also, I don't feel anything with my head when I'm inside her, whats up with that?