My BF asks for a pair of my undies every few months. He likes to be able to smell me when I am not around. I think it's cute.

I have a str8 buddy who, as a younger guy, had a thing for women's hose--he liked to smell and chew on them.

I LOT of guys have underwear/jock strap/spandex fetishes. I think there are a few websites that profive fora to exchange and share stories. Good Luck, Tremaine!