"Delete phone number = Kiss BTW wife has asked me nothing about the party and does not know about the number thing...
So Doc is back on track again…"
This is not back on track, or at least not on the track that leads to a healthy R.
This is lying by omission to your W. You know it too. Imagine the same thing happened with her -- these are things people share with each other in a trusting, monogomous R. You keep way too many "skirting the cheating line" things form W. It allows you to avoid facing yourself. It prevents you from building trust and intimacy with W.
Time to tell her what happened and how you felt about it.