WHOA!! this is WAY F#$%% UP!
Your BF(?) is headed for disaster! Personally i'd dump him, he needs a wake up call and you don't need this shit girl! It sounds like he's keeping you around for his own comfort with little thought of your needs and feelings. I get it! if he needs to transition he needs to transition but dragging you around for a security blanket is just wrong. He would do well to get in to therapy ASAP to determine if a hormone regimen is right for him and figure out if he's just living in fantasy land or if he wants to transition. He would do well to go see his doctor and have a check up with a blood panel hopefully he hasn't harmed himself.