My SO has a 25yo stepdaughter who is challenging to say the least.
She doesn't live with us but calls and talks to him most days.
She is sooooo negative and toxic like noone else i have ever met. We have nothing in common.
My SO loves her despite this and expects me to too.
This is hard when she is so incredibly rude to me behind his back.
we seem to fight constantly over her and my relationship.
According to my SO I am supposed to be the adult, be hospitable, be all accepting and forgiving.