DSS is 16 and frankly he's really hard work. He has always hassled his sister who is 10. He hangs on her, invades her space, constantly pushes her around physically. It drives me insane. DH pulls him up on it loads but he just doesn't care. If anyone compliments her says it's not true. He tears her down any chance he gets. She's one of the most passive children I've ever met. She rarely fights back at all. She just accepts that this is the way he is.
He's argumentative about everything even if he doesn't care he will make inane arguments just to wind people up....and it does! You can't have an actual conversation with him. I end up ignoring him but it feels rude. I'm at the point that every time he opens his mouth I tense up. DH has tried so many times talking to him when things are calm but it makes no difference. We have tried consequences like taking his phone away but then he takes it out on her physically at their mothers house and she begs us not too.
I just don't know what to do anymore. My own two are much younger and he is my first experience of a teenager. Is this remotely normally?