Some years ago my partner's nephew and his girlfriend became parents at a young age. We have always given them a lot of support and I'm very close to both of them and their child. Especially as neither have parents.
More recently they are now separated and the child was living with his mum, but unfortunately a combination of the child having additional needs, a bereavement and it all harming her mental health, my great nephew was put into foster care. His mum has just got into a homeless shelter that will provide help with her mental health and lead to secure housing, but currently she is not in a position to have him back.
Therefore dad wants him to live with him. Without going into loads of detail children's services had some concerns if dad could cope with his son, but have started a transition plan, involving me giving support. I have been very happy to do this.
But, my partner's nephew is so insecure. And one of the things he latches on to is that I care more about his ex-girlfriend than him, he tells her that I'm his family. Today he told me he's distancing himself from me because he doesn't know where my loyalty lies. I'm honestly so fed up with all this. I'm so tempted to tell him to just go ahead and go fuck himself at the same time! But then I think of the little boy who I adore. Any idea how I could deal with this? TIA