He abandoned you and your kids like he abandoned me and mine.  Then he abandoned the bitch that he abandoned you for - for you.  Why did you let him back in?  Why?

He's been back for 6 weeks after nearly 3 years with his mistress and already you are telling me that you are getting back to your old life with him.  You will go back to being a SAHM within the year, and I expect you to be remarried soon, too.  The question is: will you have another child with him?  I believe that that would be the most devastating event that could happen in this situation.  That would most definitely be the coup de grace to our friendship, because I would most certainly be unable to be a part of your life after that point - especially if you were carrying a boy this time. 

Currently, I am just looking for a way to end this.  I've asked a few close friends if they could possibly imagine being in this situation, and if so, would they jump from the plane without a parachute or ride it until it crashed and hope for the best either way?  Because that is exactly how I imagine it.  I guess the best thing would be to cut all contact after August 22... the day that his parental rights to my son will be relinquished and given to my husband.  I should jump - with my dignity and an edge on my bitterness.  That way, I can say that we'll have both gotten everything we could from our time together. 

You'll go your way, I'll go mine.  We'll live our lives and our shared laughter will become a distant memory that I'll miss but regret forever.  You'll be placed, with him, in a box of things I'll never not think about.