I've had sex 10 times and i am 19 years old. how come it still does not feel pleasurable after the tenth time?

Time/experience: I always advise patients that "outercourse is more important than intercourse" Spend aat least 15-20 minutes on slow, focused, touching and fondling, until you become wet or notice vaginal secretions. Touch the clitories gently and massage very slwly ( lubricant will help) until you notice tingling or stimulation. Make sure that your sexual partner is adeqately stimulated and secreting clear fluid