Don't argue. Just state that you will no longer finance her affair. The end. Nicely. Don't justify, you don't need to. It's the hardest part, but it has had the most positive effect in my sitch. Cause there is no fight. My H acts crazy, gets mad, yells, I don't engage. Then he comes back & apologizes. In the past, I try to "get" him to see, fight ensues...I'm crazy. Get it?
M: 9 yrs T: 13 yrs H:34 Me:35, S4, D2, S 7 months Dday 11/12-PA & multiple PAs Dbing 12/12 S 1/13 7/13 H moved back in basement. 8/13 #3 born 10/13 still cheating 10/13 He moves across country, I file for D