My boyfriend has troubles getting off from vaginal sex sometimes as well. This is our solution: first lots of manual work. Then one bout of sex where we go until I orgasm. Then we break, more manual, then sex again. He always gets off the second time around. Also, try different times of the day. For some reason night and morning tend not to work as well for him as mid afternoon.

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See the happy moron, he doesn't give a damn. I wish I was a moron--My God! Perhaps I am!!