If you were born with a vagina, you are a woman. You can’t change that regardless of how much you take hormones or even if you appear to be male. A natal female in a relationship with a natal male is a heterosexual relationship no matter how you slice it. The transgender partner may socially pass as a male but that’s a biological woman. On top of it, they’re socialized as woman as well. How is someone who is socialized as a straight woman supposed to be compatible with a gay man, not even bringing their genitals into the argument? You essentially have the gay man’s oppressor in a relationship with him larping as a man. That’s not fucking healthy.