I agree with the above make a list of the thing as you want and the things you don't. And play it that way. Me and the w have had this conversation already and to be honest she was quite good about it all. Whether that changes in the future I don't know.
Me:43 W:34 T10 M7 D-5 S-1 Dec16- w says we need mc Jan 17- w doesn't commit to mc Feb 17 - ea discovered Dec 16 D-day Feb 17- one night hook up March 17 w wants out but won't file