My partner nephew is a lovely bright nerdy 15 year old . Very well behaved and got a great future .
My partner and I have been together for 7 years with 2 small dcs.
We regularly look after nephew for sometimes days at a time and are involved with his life . No problems there I feel like I have a great relationship with him and he with my children . Hes a lovely sweet boy quite immature for his age in many ways .
Recently my dp told me nephew had been saying very unpleasant unkind things about me and what a horrible person I was and shouldn't be with Dp.
This is has shocked me and I've cried many tears over it. I am so angry with it that he could be so rude and disrespectful when I have tried to put a lot of energy into building a relationship with him .
I don't know whether to speak to him mum , or just leave it or should I be writing this off as normal teenage behaviour?
Aibu to being this hurt and angry or should I really have a better perspective on the situation as he is in fact a minor ?