Dp and I have been together a few years. He was already in the process of divorcing his ex dw when I met him but the divorce has been complicated by some inheritance issues (his ex dw's side). He has one son (age 14) the same age as my eldest dd and I have other children too.
His ex dw has mental health issues. Has tried to commit suicide before.
My children live with me. My ex dh has them every second weekend religiously. I have a good relationship with ex dh solely for the sake of the kids but it works ok. There is no love lost between us though but we keep it nice for the children.
Dp's ex will not agree to a schedule of dp seeing his son. Instead what she does is call whenever she wants his help (all the time) then if he can't help, she guilt trips him incessantly. Tells him he's a shit dad, that he doesn't love his son, that she'll do him for abandonment etc. Dp has gone to lengths (and legal lengths) to get everything formalised but nothing has worked. Because he does not want to let down his son, at the moment, this is meaning that dp and I can never plan anything.
So for example today, me, dp and the kids were supposed to go out for the day. At 8.30, his ex dw phones screaming down the phone that she needs to visit her father in a home and their ds forgot he had some sporting fixture and the dog has to be put down etc etc . In the end, dp has taken ds to his sport thing and the dog to the vet and because he has the car, me and the dcs have stayed at home and cancelled what we are doing.
This would be fine if it was a one off but it isn't. This sort of 'emergency' has happened every day for the last 2 weeks. She emotionally blackmails dp into responding. Last week he took ds out and explained that he wanted to see him but at a time when everyone knew what was happening rather than last minute and could ds liaise directly with dp and ds's response was 'what about my mum'. Dp says that without him there, his ex dw effectively uses his ds as a carer and he hardly ever does anything without making sure she is ok.
However, dp has found out that ex dw is seeing someone else. Which is obviously great news for him in a way lol except she appears to be enjoying punishing dp like this and she will know how much it is winding me up.
Clearly dp needs to stand his ground more. I can't (and won't) make him though. Once he did and he had to call the police as she went off with a box of pills to top herself (this was only a month or so ago). He is a soft hearted chap and that really upset him and he's never really forgotten it.
I feel sidelined and I can see dp knows this etc but on the otherhand I have massive sympathy for his position (and his son). Does anyone have experience of dealing with a difficult ex?