I think I may have a serious issue with the clothes I like to wear. Help plzz?

So, this is kinda embarrassing, but i really need to get it out. im a 17 year old guy. i think im kinda normal, but i really lovvvveeee to wear girls clothes. i dress up in my moms lace underwear and wear mini skirts and sexxxy girls clothes whenever i can and makeup toooo. i love to go out in these outfits and see if i can get around without people recognizing me like i go to stores in my town and it usually works pretty good cuz i stuff myself pretty well so im sexy. but here's the prob. i was out the other day and a guy told me i was real hot and wanted my number. i like girls, but i got hard when he was asking me this and i almost blew my cover. im so scared. im not gay, but it's like i want to be the girl figure in a lesbian relationship. i want to be a girl alot.