I had a long-term gf and we always had to fuck for 50-60 mins till I cummed. Often I had to finish while masturbating and spraying it on her tits/back. I thought it was because she is tall and not so tight - she is ~5'10 and me having average size penor - I am 6'1 and 6,5"/5,3". This night I fucked a short blondie, with tight as fuck pussy. She was begging me to cum on her tits. I was drunk, but I also couldn't cum after like 40 minutes. What do? I heard something about a "death grip". This summer I masturbated lot less then I used to - probably once per 3 days.