matbe have him try placing his thumbs on your clit during sex.This way you can get clitoral stimulation but be recieving it from him which will boost his ego.Also lets not forget the toys it can be very fun and exciting making your woman cum over and over again without any penitration at all.though caution should be used with vibrators as I here over stimulation can do the opposite.Also you can try having him tie you to the headboard so you cant touch yourself and let him tease you for a long priod of time bringing you to edge again and again untill your screaming for it and when you finally feel the head brush up against you there should be no need for you to masterbate.Food for thought anyway.

__________________
It was me,I did it.....
I killed you with buttons and bows....
all those clothes......
while you slept.
Rodger Waters