another day

so yesterday was one of those days, the one where nothung went tight and seemed to never end, then work finally ends and i get home, the wife (stbx) is working in the bedroom on sorting out her (many clothes for the season) and i ask her if she s about done for the night. she asks me about some stuff, then decides to have casual sex. With court dates set and trying to supposedly move on with her life, I just dont understand the situation anymore. I want her to stay in my life as my wife, i feel she is my soulmate and would feel lost without her. I orerd a book online , just waiting for it to show up now and hoping it gives me guidance with good read.