[MugenX]

For my understanding, if one is too tense during sex or too nervous, he cant marikita or even worst, cant even shoot because of psycho effect. I cant elaborate much as it might sound chimology to u(but u can actually goggle it as i did face this problem also) but my advise for u is to relax and calm yourself before u engage on any sex activities as it not only help u to marikita and oso the person u haf sex with can enjoy the process too if not she will be damm siong. In fact, the duration will only affect the thickness of the cum and the time for it to shoot out.