Hmm ... seems to me a lot of people are underestimating the degree to which the whole concept of transsexuality disturbs people.
Of course we should be proud. Of course we should have self-esteem. And of course we should expect, and even demand to be treated with respect by the people we love and who we want to love us.
But, come on people ... this stuff is hard. It's really hard for most of us to come to terms with being transsexual. It's really hard for our families, spouses, kids to come to terms with it. It's even harder to actually act upon it. So I say, let's cut the guys some slack.
We may not like it, but in the real world, any man who 'comes out' as dating an MTF, pre or post-op is going to have to face an extension of the same prejudice we face. People are going to say he's secretly gay (and yes, that's a transphobic, homophobic double-whammy of prejudice, but that doesn't make the problem any less real). Since we can't give birth, a guy's parents - particularly his mother - are going to be upset because they know he can't have kids with one of us, so that's no grandchildren for them. He's going to get whispers behind his back from friends and workmates ...
We are asking a HUGE amount from men. So, just as we have to move forward in baby-steps, so they're entitled to the same consideration. If a man makes it plain that he's never, ever going to go public with your relationship, then, yes, he's not worth having. But if he loves you, and he's proud of you, but it's really tough for him to face the consequences of loving an MTF, then I think you should do what any loving girlfriend should do. Support the man you love. Help him through a tough time. Don't nag or bitch at him, but let him know that you understand his problems.
If that's not enough, well maybe he's not the right guy. But if, over time, he can man up, show the world how much he loves you and tell anyone who doesn't like it to go to hell, well, then he's a keeper for sure.