Battle fatigue...and post traumatic stress.
I, too, find myself vacillating. I have decided to end the marriage, but haven't yet told my husband, as I don't want to subject myself to what everyone here says will be the likely reaction. Some days I'm strong, and can get through the day; other days I ache for comfort and closeness from my husband, the very man who has put me in the position of needing such comfort.
Like jkpeace, I am finding that even though I've reached a decision, after many months (I'm 22 months post disclosure now), and am certain that I will be glad in the future that I have taken the time I have, and done the things I've done to try to remain in the marriage, that last 1% is tough. I see that I tend to undercut myself; when I have a particularly strong day, I will find myself then wanting to do something supportive for my husband, wanting to make a move toward him. To tell the truth, I think maybe he's doing the same thing, because some days it seems as if he can barely stand to be in the room with me, and others he's affectionate, as if he is happy with the status quo (he's not cross dressing right now)--not that I know, because he has ceased talking to me about what he's feeling about himself. I suspect that the state of uncertainty I'm in must be something like that felt by spouses who never do know for sure.
Kel said in a post on another thread that people who were curious gave her a chance to talk things out--which I have found to be true with the one person I have told close by (two friends who live a thousand miles away now know, as well). Coming out of his closet, even to the extent I have by signing onto this forum and by telling the three people I've told, has been sanity saving for me. I can see, however, that once this news gets fully out (if it does, if my husband ever comes out while I'm still living and working in the same place, as I am now), it will be important to have thought about how to handle the idly or pruriently curious.