My father had left my mother and I when I was about three years old, he had a previous wife and daughter, but he had divorced the wife. After he left, he cheated on my mother. (They were still married.) He came back occasionally to see me and we talked on the phone, he lived with another girl at that time too, and I'd go and visit them. He later came back to stay, but most likely for financial reasons, and to help my mother with her sickness.They always fought though, and still do. But now my father is really sick (practically lying on his death bed) and we have to take care of him, clean him help him with everything and I know it's stressful for my mother, it"s stressful for me too. But today I found out through my mothers text that she's been cheating on my father, as well. Ex texts; I want to f*** you, let's wrestle naked, lets hangout I just need an excuse to tell my family, etc. And the other weekend, she supposedly worked on the weekend, and "she was the only one in her office" She doesn't know I know. It's tearing me apart because I don't know what to do and I thought I can trust her, and she doesn't seem to care about my father. I just don't know what to do. Any ideas?

