W held it together for the party. I kept busy, helped out when needed, stayed cool. Went to look at some furniture for the new place. Watched Mad Men for the first time, pretty good series.
I don't think there's anyone else involved now. That's why she's starting to crack. I'm almost positive there has been an EA/PA in the past, which is probably why she has so much guilt/depression going on.
Now that I've made the one big decision, I need to get my mind ready for telling my girls I'm moving out. And then try to figure out how involved I'll be with my W as we raise our daughters in two households.