Been with my fiancé 5 years. Ds from previous relationship is 9. On the whole we all get along well but dp (who has never had kids or really spent any time with them) decided to forge a matey sort of bond with ds at the start rather than an authoritative one. Which I supported to an extend as ds dad still very much around so he doesn't particularly need another 'dad' figure.
But over time this resulted in lots of 'banter' between ds and dp. Winding each other up. Annoying each other. Silly jokes. Sometimes taking it too far. I've spoke to dp about it and he has tried to tone it down but my son now has such an attitude towards dp. He will casually tell him to shut up, ignore requests and when he's pulled up on it his excuse is always 'but he winds me up' even when dp hasn't said or done anything. He isn't like this with anyone else and usually responds well to discipline from me, his dad, grandparents, teachers and so on.
I'm at a loss as to how to redress this dynamic between them. I feel for dp who is fed up of getting attitude but at the same time he created this dynamic and carried on with it even at times when I asked him to calm it down. Help!