pre transition cis girls are the primary thing on the menu
Pre transition you were seen as a straight/bi man, the expectation of women of men is often for you to support them through college, or if they're already working, to have a sense of safety knowing that if they lose their job they can be housewives depend on you because you're the man. Marriage materializes this expectation into a responsability you must fulfill (in sickness and in health yada yada). If you're a woman you now have as much to fear in terms of financial stability as them, or likely even more due to being trans, that's a dealbreaker for them, why fall in love when there's no assured future there?