@LifeIsAGameYouCannotWin
Another though.. according to some people here if he said if you don't want me to transition I won't - it's putting his choice on me a decision that he has to make himself. But then if he said I am transitioning regardless of how you feel - it's being a bad partner and an arsehole. You cannot win.
No you can't - either you are living with a husband who is unhappy and the cause of that lies with you, if you say no to transitioning - there will inevitably be negative feelings of guilt, resentment, feeling trapped etc.
Or
He 'transitions' (whatever that means, whatever form that takes) and you have to adjust to something you didn't sign up for, maybe making compromise that aren't compromises but are actually sacrifices.
By leaving you then become the bad guy as you didn't stand by your man (who wants to be, or at least be seen as, a woman).
I really hate comparing 'gender' or gender identity (or gender dysphoria for that matter) with sexual orientation as I don't see the LGB with the TQ at all - but to use an alternative situation as an example...
Had your husband say he was gay, not Bi or questioning, but gay, and he wanted to have an open marriage where he had sex with men, he didn't find you physically attractive, but he loved you, loved your life together, thought of you as a best friend and thought your were a fantastic mother and that you had a great family and set up...you could maintain - as Stephanie Schofield has - living together as man and wife but not having a sexual relationship, he could stay in the home, your son would know him as Dad and still have all you have now, two incomes, shared childcare etc.
But he would go out and have another life that didn't involve you. Could you imagine yourself in that situation to not be jealous, be fulfilled in your marriage, to not have sex, not have any resentment build etc.
It's not a perfect example, but it's comparable in that it would be a situation you didn't sign up for and it it your partner seeking to change things, not you.