Speaking from my experience, a sincere apology can really start to heal wounds if the it comes from the place of you really understanding the hurt that your W felt. But then it must be followed with positive actions.

Me 57/H 58
M36 S 2.5yrs R 12/13

Let me give up the need to know why things happen as they do.
I will never know and constant wondering is constant suffering.
Caroline Myss