The STBEX is in the house

I can't stand being in our home with him. It's a visceral hatred that I feel. How could I hate someone that I've loved this much. It takes every ounce of decency to not curse him and tell him to F off and so much else. Breathe. Breathe. He's only here a few minutes to pick up the basement cat and say goodnight to the boys. Please leave now!!!!