[amead]

Suggesting that OP is the one who needs to do _ANYTHING_ at this point is bewildering.

He needs to go back and apologize and see if things can be fixed? What?!

Apologize for getting upset that she was CHEATING ON HIM?

Gee, sorry I lost my temper when I walked in and saw my murdered family and you holding the bloody axe. I mean, I didn't keep my cool and get all of the information before jumping to conclusions.

There is no "it was just a suspicious phone call". It is certainty that the mother of his child and future bride was getting some strange on the side.

The notion that the ball is in his court to go back and fix things, starting with an apology, is simply absurd. She has his number (as she obviously knows it well enough to give it to the guys that she is humping), and is 100% the one who should be making contact here.

Aside from her reaching out with sincere remorse (which likely still won't be enough to continue a romantic relationship), the only move is to wait for some time, get your stuff, and see about visiting with your kid.

Apologize? Insanity.