Im just wondering here, im 21 an me an my fiance have sex all the time. But tonight we did it for over an hour an for some reason i just could not cum, we did everything that always makes me cum. I feel so bad cause i don't want him thinkin he's not any good. But we've never had this problem before, the sex is amazing an i always bust at least 4 times. Just tonight i couldn't for nothing, could someone just tell me what they think. Im just wondering cause I've never had this happen before.