I am with AG on this one. If you read "Women's Infidelity" then you know you are in limboland and it is to her advantage to stay in limboland. It is tough on everyone (children included) but her. She is being selfish, cake-eating, and wrong.
If you want her out (we all know you do), you have to move forward on it. She obviously is not going to do this. Yes, it will be hard on the kids in the short-term, but better on them in the long run. Do you really think that being in a home without mom and dad showing love to each other is good for the kids? I think it is better to have the love flowing and the kids immersed in it (just MHO).
So what to do? If you want her gone, the I say go see the L and file. This will make her come to the negotiating table and go away sooner. Let her cry all she wants about destroying the kids lives, SHE did that, SD, not you. Don't let her throw a guilt trip on you. Open marriage?!?! - that is an abomination to man and to God. Let her reap what she sowed.
Best, --Chris
Me: 40 She: 31 S: 5 D: 3 Married: 8 years (05 DEC 99) Blow-up: 02 JUN 07 Piecing (More like Ostriching): 22 FEB 08