The parent the dc live with has been single since dc were very young (4 and 2).
In the intervening 9 years parent didn't date at all. Parent has now met someone, been with them a few months and new partner has had dinner with parent and children a few times very recently.
Dc have been rather rude and unwelcoming towards new partner at dinner and parent and new partner have decided to pull back on introduction consequently.
I'm just wondering - in this sort of situation - how much animosity towards the new person, purely because of what that new person is in relation to their parent, is normal for a now 10 and 13 yo?
My only knowledge comes from tv and films, which had lead me to believe that such animosity is normal and to be expected?