Looking: You are entitled to child support. The laws about that are strict these days. Research the laws on line and get a Family Lawyer. Unless your husband's girlfriend has committed a crime, it is unlikely the kids can be kept from her. The way I moved on was to be good to myself. I joined a yoga class and a low cost health club. If you cannot afford that, walk the malls and go for nature walks when the weather is good if you are able.