I have confided in two people (other than immediate family) over the last 6 months. One is a co-worker and he was in a similar situation and has kept it private. The other is my best friend. It really is none of there business as it no longer affects my work. But they will eventually figure it out when I don't show up with my W at the christmas party or they find out I live in a different home by myself (some co-workers live in my neighborhood). Or see my wife with someone else.
The co-worker kept his separation a secret for a whole year. When the subject came up after a year he would simply respond matter of factly "Oh haven't you heard were separated".
People at work have told me we were role models for a perfect marriage. When they find out about the separation they are going to want some details about what happened.
