Your wife and NYGal are moving out on the same day. My H's OWs birthday is tomorrow as well. Apparently I wasn't wrong, I KNEW it was a bad day!
If you have to be there when your wife moves her stuff out, I can only think of 2 things you can do. You can either show her what a nice man you are by helping her load her stuff up- she will definitely think you are detached and moving on with your own life without her. If you choose to help her, you will have to do it while ACTING AS IF it doesn't bother you, like you're actually wishing her well with HER choice to move on....no tears, no crying, no begging, no clinging, no trying to change her mind, etc. OR, you can go in another room and watch a movie or something with the kids until she's done. It's going to be a very hard and sad day. Just remember that this doesn't necessarily mean the end of anything. It's not over till it's over. This is only allowing you some space and time to work on yourself while she does whatever she is going to do anyway. Nothing you say will stop her, so wish her well and then start working on yourself so you will be ready later for whatever may happen.
M:45 H:48 M:11 No kids BD:Sept'15 EA:Confirmed 1wk later PA: Oct'15 12 '15 2 wk R Just kidding, H wants NC 12 '15 H back w/OW 4 '15 R &still working on it