I'm not familiar with your situation, but you should talk to an atty about this, if you haven't already done so. You should continue to meet the family's NEEDS, but have no obligation to meet her WANTS (unless and until a judge orders it, as perhaps being "the lifestyle to which she is accustomed," which -- sadly -- women often get, even when they've been unfaithful to their husbands).
And you DAMNED sure aren't under any obligation to enable her affair financially.
I would suggest that you do this IN WRITING, and run it by someone first, to make sure you have it out there in black-and-white that you will continue to meet your obligations, so that she doesn't twist it around on you.
Puppy
Good advice. I do want to make sure that I make sure I don't end up getting shafted even worse. I haven't talked to an atty, so I don't know what my obligations are to her. I have full custody of s7 at this point. She was the one who decided to move out. She's driving a truck that I'm still paying for, using a cell phone I'm paying for, going to C on my dime. She's got credit card bills (not in my name) that direct-draft against my account. We still owe more on our house than it's current value, so there's no equity there to split. We have tons of debt that far outweighs any assets we have. One exception; when I got fired this summer, I cashed out of my stock savings plan, and have a small amount of that remaining that I guess I would be required to split with her. I want to make sure that if I do give W her share, I have some legal signed documents that show that transfer. I really do need to speak to someone that can advise me of what I'm legally obligated to provide for her. She hasn't really worked in 7 years, and I've been the sole provider.
None of this seems very related to divorce-busting...more like divorce-inducing, but it's a reality I have to consider.
Me 45 WAW 36 S8 T 15 M 12 Multiple PA's since 6/07 W moved out 10/25/09 I filed D 12/29/09 Sitch