<human>: Give me the gist of the text in a nutshell

After she asked me for a divorce, I was of course hurt and confused.  This was a big surprise to me.  And before I was out of the house, I secretly read her journal and found out she was seeing someone, or at least she had strong feelings for someone.  I never told her that I know though because it's irrelevant to divorce in our state, it wouldn't have changed what was happening (it would probably would have made it worse) and it would hurt our children.  After the divorce, nothing came of her relationship with this guy. 

We've been polite, cooperative and even considerate to each other throughout this process.  We still have one child at home and the other is in college.  After two years, I think if I tell her I know what happened, I'm afraid we'll end up further estranged.

But I would like to be friends if I can. I still care for her.  I'm not sure which way to go here.  Thoughts?  Experience?
<bot>: Divorced after 22 years.  I found out she was having an affair but she doesn't know that.  Now she wants to be friends.