I have been separated for 9 months. In 3 months time, I can file for divorce. Property settlement all sorted. No formal arrangement with care of the kids, just a verbal arrangement that has been going reasonably OK to date. Kids are 1 & 3 years old. I have them every second weekend only at present. Ideally I would like them more and shortly plan to try and get a legally binding agreement (hopefully by agreement with my ex). My ex-wife started seeing a new man about 6 months ago. They are boyfriend/girlfriend. He has children to other women and does not get to see them very often. I believe there is issues with him being able to get time with his kids because his ex’s don’t trust him, etc. He has anger management problems and a history of violence. He has more than one AVO against him and possibly a criminal record. I have also heard that he has been involved with drugs in the past (not sure whether using or selling). I also know that he has threatened my ex-wife at times things like he was going to kill her or hurt her when he is having these anger episodes. However nothing has been reported to the police in that regard etc. Quite honestly, I would be fine with my ex seeing another man, that is her business, etc. Also would be OK with another man being around my children. However a man of this nature and background is very worrying to me and personally I am not very comfortable with him being in her life in terms of safety concerns for my children. I expect in reality it should be OK, like why would any person want to harm or attack my children, even if the toddler is cheeky and does something to aggravate him surely he would have enough self control not to be violent etc, but can I ever be certain? Is there anything I can do about this situation? They don’t live with each other and he is apparently not around my children very often at all (I cannot confirm this though). I suspect they may be planning to move in together shortly. Should I somehow try and get a background check done on this man? I don’t even know if members of the public can organise such a thing. Is this a legitimate thing that I could apply to a court to prohibit them from being able to live together or him being able to be around my children or basically nothing I can do? I expect if he is simply having a relationship with my ex-wife there is nothing I can do to stop that. Also if he sees her around the kids and she is always present I expect again I cannot stop that. But can I somehow prevent them from living together (when my children are in her care) and also prevent him being left alone with my children (I know this is all hard/impossible to enforce..). Just don’t know how to deal with this.