Lidea, I completely get what you mean. The few times I saw my H fully dressed was unnerving at best, and outright traumatising on the days I just wasn't emotionally up for it. He, too, doesn't behave as he usually does. He doesn't behave like a woman either, or any woman I know, but I can tell HE thinks he's being feminine or whatever. Really, he just looks drugged and high. He is a stranger and it's sad, because we married our best friends, not strangers.
Does your H want you to see him as an actual woman? Jennifer made a good point that you should ask him this. I assumed, as you do, that mine wanted this. When I finally discussed it with him I understood he wanted me to physically see him as female, but underneath he's still the guy I married. Well, I tried that approach, too, and that still didn't help me. He'd still look high and different and I couldn't be around him anymore. It's so true what you wrote - this happiness for them is quite the threat for us. I get knots in my stomach and feel like I'm in a bad melodrama where the wife is meant to pretend everything is normal when there's enormous pink elephant crowding the living room!
Some days, I think this can't possibly be healthy for a spouse? But others, more so since joining here, I see it as strange, but harmless, and something I don't need to be involved in anymore. So my H dresses away now where I don't have to see it. That's helped, a lot. No one said we had to involve ourselves in all our spouses past times and while this is an important one for him, so was my sanity, so this works for us. For now.
I try not to think too long about the future, to be honest. When you have something like crossdressing in your relationship, and all the unknowns that can bring, planning ahead seems pointless as we can never truly know what will happen. Look at Paula! Rare, sure - but it happens and that will always be there in the back of my mind every time my H dresses.
I wonder if the wife of a recovering alcoholic is always just waiting for that fateful day he picks up a drink?