I have posted about this before, quite possibly under another name, but I don't really care about being outed anymore. I will try to be concise.
ExH and I separated 18 months. His previous girlfriend was lovely, got on well, happy for kids to be with her etc. He split with her in January. February new GF on scene. Late Feb incident (children not present) where she got drunk +++ at his house, picked a fight, broke up with him because he still got on with and communicated with me (she has 'major resentment issues' about me for reasons I don't understand) self harmed, then got in her car and drive off after 3/4 bottle of gin. He was whatsapping me throughout for advice as he thought she would attempt suicide. Told me she had mental health issues and was on medication at time of incident. When she got in her car, told me to move mine (live down the hill from him) in case she deliberately damaged it. Police were called but she'd come back by the time they attended so she wasn't arrested for drunk driving.
Amazingly he took her back. I have been insistent from this point on that I don't want her near my kids. He initially agreed, saying he would have her meet me first once she was 'recovered'. She refused. He then told me he wouldn't let them meet her without warning me, then took them to dinner with her in half term without my knowledge. I told him in no uncertain terms that she was not to be there with them overnight, to drink around them, or drive them anywhere. Following weekend he allowed all three, again without telling me - I found out from the kids - and did so on a weekend I was away and couldn't have come back easily to intervene had I found out. He refuses to acknowledge my concerns, just parrots that she is a 'totally different person now' without being able to articulate how or why. His behaviour has changed massively since he has been with her.
I am now insisting on no contact with her. I have involved social services who support my position and share my concerns and have advised me to withhold contact if he will not give an undertaking that she won't be around them. I'm a newly qualified social worker. I also sought advice from a tutor who agreed with my position and advised I would be negligent NOT to place parameters in contact. Three social workers telling him his children should be kept away from her and still he insists he knows better.
He's been offered the opportunity to have a contact agreement drawn up by my solicitor but has refused. I've filed for a court hearing for a prohibited steps order to prevent him bringing her into contact with them but hearing isn't until the end of July.
He is supposed to have the children this weekend and they were looking forward to going. However he has point blank refused to give me assurance that his GF won't be around them, so as per SS advice I have to withhold contact, and his position is that it's my job to break the news to them. How in the fuck do I do this without hurting them? I don't want to spoil their relationship with their dad in the hopes we can get things back on track but I need to make it clear that I'm doing this to keep them safe and I'm out of options here. They are aware that they are not to be around the GF and child friendly reasons why.
What do I say??
Sorry if I've missed vital info, I'm exhausted and stressed, I'm not trying to drip feed.