Long story short... I’ve been with my Partner for over a year and we are now living together. We have my children living with us (5 yo girl, 6 yo boy and 8yo boy). My partners son (8yo) comes and stays every other weekend. When he comes he is so spiteful and just awful. He wants it all his own way and will be my children’s ‘friends’ when they give him things he wants. Otherwise he is aggressive... for instance we have a gaming room with an Xbox, he was in there and my 6 year old autistic son went in to watch. He didn’t like this (even though it’s ok for him to do) so strangled my son. He came through crying, gasping for breath and said what he’s done. Of course he lied and said he hadn’t done anything, he lies all the time about everything. He will nip, scratch... my children for no reason. How do I go about this? He’s not my child and I’m starting to resent him as he’s so vicious and it’s made worse by the fact that he lies about anything he’s done. His dad gets angry but mostly doesn’t punish accordingly. Advice please.