He cheated

You know what sucks? Being cheated on by your husband. You know what adds to the suck? Finding out it was going on while you were going through cancer treatment. Icing on the cake - them denying the irrefutable evidence. I just can’t y’all. Even better he a. told her we were separated and sleeping in separate rooms b.works with her c. She’s also married and d. He told her I was cheating on him with my ex who doesn’t even live in this state like what in the actual hell - more than that he told other people this lie about me and we live in a small town so ya know that kinda thing goes full circle eventually. I just don’t know what to do. He has a really bad temper so I got my stuff out the house while he was with her yesterday and I just feel so lost.