I know some straight guys who love to wear panties, and believe me...they're STRAIGHT!. Communication is the key. I think it's pretty harmless. Why not, if it turns him on, and he has fun? Just talk to him and keep the communication flowing. i wouldn't worry about it. most men wearing panties are heterosexuals. on the bright side, at least you have more in common than most hetero couples. you're more likely to be able to get better gifts for each other, perhaps matching panties.
