Hey fullkegs,
i'm a little confused. How is she your EX-gf if you're sharing a bed and still getting (some) sex? Do you mean, no longer exclusive?
Sounds to me that your situation has a great potential to be really hot and satisfying for you both! I mean,you say you really get along and shes dating others and she likes younger guys! i'm assuming they are more viral,longer lasting and more dominant? That last is just my projection..

Another question though...Why buy the cow when you're getting milked for free??!!
Regarding your initial question about asking? Well, it seems that you write well. How about a letter if you're too shy? Another tack is "fantasy" pillow talk, let her know how horny you get and see how she reacts?? Lots of women are shy about revealing their own feelings for fear of hurting our fragile male egos!
Good luck!
Who's Your Bitch.single,cuz not man enuf to attract a woman.
Will meet for sissy sex with yor cuck!!