Am I the Asshole?

My spouse and I are 31 and 32, we have two kids and have been together for 13 years, married for 7.5 years. When we met we were both cisgendered lesbians. In the last few years, my spouse has changed his hair to a tradition men's cut, changed from "women's clothes" to "men's clothes" (in parentheses because I don't believe clothes have genders, but just painting a picture), changed his name and gender marker to male legally, and is 10 months on T. I am a lesbian. We have had several lengthy discussions on how the love between us is still there, but I'm not sexually attracted to men. He says, "I'm not a man, l'm a non-binary trans-masc." I counter with, I'm still a lesbian. I'm only attracted to women. Yet he still wants to be married to me and I've told him if he wants out, it's ok. I don't necessarily want a divorce, but l'm no longer sexually attracted to him. Does that make me an asshole because I can't see past the changes? He says he's the same person and I KNOW that cognitively, but T has changed his personality. He isn't the same person I married physically OR emotionally. Honest thoughts?.