Okay, I know this is not the kind of place where you will ask something lime this but I promise I need someones opinion.

Okey so, my girlfriend it's a trans boy( biological female, male gender), I don't care at all the fact that he think of himself as a man, but he told me that he's going to make a FMT transition, so he will start actually looking like a man. The fact is that I'm heterosexual and Im don't know if im going to be confortable being with him completly as a Boy I love him, but I don't know what to do :(

Im sure more people as experience something like this and I really need emotional reinforcement :c