Well been home a week and it has been horrible. I had to go away one night in the week for work, found out tonight Stbx spent the night at gf , my neighbour told me he had asked her to feed the cat, then tomorrow he is taking her to some mutual friends for the evening and staying over. I have asked him to move out , he could easily move in with her, but he keeps refusing. I am seriously considering moving out myself as my mental welfare is at stake . Youngest son is home from uni and he is witnessing me and his dad arguing, not good. Don't know why I keep letting myself get so upset about him and gf, she is not the reason we are splitting, but it feels like it is the major thing that is upsetting me. He has booked them a holiday later in the year, then he says it's early days yet, doesn't seem like it.