You can't nice him back, and you are prolonging your pain by continuing to act nice to him.

If you need to Facetime, do it, but limit your conversations.

W 34 Me 42
Married 7 years together 8
0 kids 1 beloved dog
BD 4/6/2018
I moved out 4/7/2018
I moved back in alone 8/05/2018
I file 3/06/2019
D official 5/7/2019