hey sweetie. like yourself, i LOVE being on top. what i've found is that it's best to ME if I'm sort of grinding on him...that can make me cum pretty fast...but it doesn't work for him. what works for him is for me to pull up a bit and keep the opening of my vagina closer to the head of his penis. if i do him fairly quickly like that, he's a goner in less than a minute!
the nice thing about this is that it enables me to do the real deep penetration and grinding action on him for my pleasure and the to finish him off with the upper level work. i hope i explained that so you can understand.
one question though...with the understanding that all guys are different. what difference does it make if he wants to switch positions? AFTER you get yours, my attitude is switch to whatever makes him feel the best, and let him get his!
jasmine