I want to ask when I masturbate it takes me more than 15 mins to do it Even 20-25 very often. Whereas if I do it fast continuously it takes 10. But I have heard from friends and all that anyone can do it within few minutes I try it doing it within minutes but I cant. My arm pains a lot, Also when I get intimate with my girlfreind, She ejaculates sooner than me. She gets tired sooner Even at times I have done it 3-4 times within few hours with me ejaculating only once in this period and she does it more times than me. I feel a little unsatisfied at times but yes when I did it the 4th time After that I ejaculated myself in 5 mins. I feel weird as I discuss it with my girlfriend too. I just want to know like I have really heard this very often the thing which happens with me every time Is this any condition which I have within me or what?