all I can say is be as tough as possible to get an agreement that you would settle for if this becomes permanent
the reason being is negotiation is unlikely to become easier as time passes, and it also shows her exactly what a D looks like.
My W is currently pissed with me since I am "punishing" her and not "being friends" around sharing kids etc. I'm simply letting her know exactly what it will be like and she don't like it!!!
It also makes things much easier for you to detach and not become reactive to all the things she is doing or saying - you have a blast without her in your parenting time, and you GAL like crazy in her time!
Good luck
M 10, T 18 M: 36, W: 35, D: 8, S: 6 EA: Oct 12 ILYBINILWY: Jan 15 BD: Aug 15 Separated: Sep 15 Miss you: Jun 16 Aug 16: Dating (!) Oct 16: Selfishness returns... currently: disgusted