My DP has an extremely bitter ex - beyond anything I’ve ever encountered before. They stayed together in a miserable marriage for the sake of the DC, she has openly admitted this to others so we aren’t talking about someone who is upset over losing the love of their life. He put his life on hold and wanted to wait until the DC reached 18 before leaving. Despite it being 5 years since he left her, her entire social media feed is a criticism of how awful he is to the point of obsession. It’s the usual stuff, he is narcissist etc. (this couldn’t be further from the truth!) It’s a complete character assassination and DP is quite upset by this especially as she has lied about quite a lot of things making him out to be a complete ogre. She was very controlling and DP had to have counselling for 18 months to help him find the courage to leave her. Despite everything she has done, he refuses to say a bad word against her and although he’s hurt by the comments, he takes the attitude that those who matter know the truth.
The problem is that she has clearly completely poisoned their eldest adult DC who is still living at home with her against him and DP has found this really difficult to deal with. They had a good relationship prior to him leaving but now his DC refuses to speak to him. He’s tried messaging several times and he doesn’t get a response. It has been 5 years now and DP is really struggling. Does anyone who has been in a similar situation have any advice on how to handle this?