buy him a pink bra to match. if that is his only problem you found a great guy
Force him to wear them all the time! Then molest him and rape him. Pretend u r lesbian. Dress him up to go to a crowded place w short skirt and no panties, then stroke him hard so his **** w stand upright thru his skirt! Then make loud noises to attract attention!
He was obviously doing it because he enjoyed it if you had to catch him. Unless you want to keep him from something he enjoys then don't do anything. But up top it says you asked this question 10 months ago so the proper question would be "what DID you do?"
Help him pick out outfits and colors that look good on him, and help him with his makeup.