A tranny gf is a tempting thing, but you must resist the urge to fuck them. It is said that some Trantifa members have impressive control over their anus. Supposedly they achieved this by doing kegels nonstop. With this strength they take unsuspecting males with them to seduce and lay with. When the time comes for you to stick your penis inside the tranny, they constrict the anus and sever your member.
Remember: it is not worth it to date a tranny, no matter how cute they are.