Maybe andy noticed they matched your dress. My first impression was Andy might be thinking: (she is wearing my socks so maybe she does not hate me or is not as angry or feeling as distant with me today. It is safer to be with her/Jo today or at least the tension between us is less than it was several days ago)
Another thought is he did see the socks matched the dress.
A third thought is She likes what I like.
It was good to hear Andy was not trying to dictate the education of D4 and was pleasant to you.
Giving you the time lines of OW#1 and her bunch moving out was a good sign too. When people want to hurt someone they usually hold on to these details.
