So my now ex we both have a son from a previous relstionship and have one together hes a baby. I had a bad pregnancy was in and out of hospital whilst this was going on he was speaking with several women behind my back. Any way fast forward few months later hes gotten really lazy refuses to work cook clean barley helps with kids. Won't give his 4 year old son a good routine so on school night his son will be up at 1am at times and he says I'm being unreasonable buy making him go bed. He told all his friends I hate his child. He's posting awful things about me online. Shouts and calls me and my son names threatened to kick my door in and tells me hes going to see other women so i left him for obvious reasons. Told him he can have contact with his son thats not a problem. But hes telling every one I cheated on him and he's saying i ruien his life and I'm messing up my kids life said i let a few words get in the way of a family But hes just getting worse and worse over time any advice on how to deal with some one like this ?