I'd probably say
"Joke's on you, I'm already feminine enough to count. The stockings and skirts are a tad much, but I'll keep the collars. Actually screw it, I'll keep the stockings, but I won't use then regularly."
¯\_(ツ)_/¯
I'd probably tell him he can stay if he wants, so long as he contributes and takes care of himself and all. I'm not one to be hard on people in any sense of the words, and I have a boyfriend, so...