"Considering all of the recent deceit on your part, I really don't think a 'date' on Saturday is appropriate at this time. I have decided that I will no longer be disrespected that way. I will not live in an open marriage and share my husband with another woman. I wasn't a perfect wife but I will not tolerate the affair in our family home. It is disrepectful to me, our marriage and our family.
You need to terminate all communication with OW IMMEDIATELY and if you don't, I think it is best that YOU move out. I will not live in a marriage like this. I want you to find another place and be out of here by as soon as possible."
The conviction in your voice will let him know how serious you are. This isn't a dialouge. It's not negotiable.
I might not leave the timetable open ended. Replace "as soon as possible" - with "__________ days if not I will pack your stuff and put it in the garage."
If you get lost, say nothing, think of all of us, smile on the inside and get back on track. You can handle it.
Cheers
M22,H45,W45 S21/18D12 Retain faith that you will prevail in the end, regardless of the difficulties and at the same time confront the most brutal facts of your current reality, whatever they might be.