Puppy,
There is no open marriage anymore. He has his wedding ring off, he lives in an apartment, he isnt intimate with me.Yes, before I thought it all through, I did pursue intimacy with him but he didnt initiate it and hasnt since. He is trying to decide (he says) between our marriage and OW but he views being separated as not being in a marriage--that is how he defines it not me. When he does decide, it will be to either give her up or divorce and probably marry her. He doesnt want to go on indefinitely AND has never suggested an open marriage.

I dont write very well and used the word "demand"--I would never demand. I have told him he still has a choice ==choice is his(after he said he had "irreparably damaged our kids and me" by his lying and A) and he could choose to come back to our family and there is forgiveness and love or he could choose the OW.