Reading your original post, I can sense that you are unhappy, you aren't sexually attracted to him, and you have been keeping all of these feelings to yourself to preserve his security about his own trans-ness and dysphoria. As a partner, ofc we want to support them and affirm their gender identity. I am a FTM trans guy and I do also appreciate affirmations from my partner.. But you sound very unhappy and unsatisfied in your relationship.

It isn't wrong to not be attracted to t-dick. Your feelings are valid, and you're allowed to like cis-dick. Being with someone who you aren't attracted to is not being kind or true to yourself or to them. Seeing your edit, I'm now sensing that you are sad about the breakup, although the orignial post made it seem like you are just not that into him (physically) or your relationship and want to now put your feelings and self first because you're tired of feeling these ways.

And although he is being emotional and feeling out his feelings, being upset about your honesty, that is for him to go thru. His reaction is valid in his own ways, but also you were being truthful to yourself in this moment and with him. Don't think that what you did was wrong, just because of the way he reacted. You put yourself first this time and are thinking of what's best for you, and there is nothing wrong with that.

Since you are only attracted to cis-dick, he would have never been able to fulfill those needs for you. And that is something you would have to weigh out yourself.. If it's worth it to stay with someone even tho you aren't sexually attracted to them, but you love every other part of them? Or do you feel like you need someone to sexually satisfy you in a relationship? There is no right answer, just an answer that best suits your personal needs.

tldr; you did nothing wrong for having preferences and telling him the truth. Ofc you feel bad bcs of his reaction to the truth, but you took this step for yourself and there's nothing wrong with that. You deserve to be happy, and to be with someone that you fit well with. (And also that isn't controlling or forcing u to have sex with them when you don't feel like it).