You could have been talking about my family 9 years ago. Step Son is 7 years older than my older son and 8.5 more than the youngest. BM used to pull crap and say nonsense (your half siblings aren't your real siblings, you have to live with someone for them to be your real family...). It set him up for fal;ure. He was so jealous of the younger boys. He hated that they got to live with their Dad and he had to go back. But the crap his mother put in his head messed with it. She had him convinced that his brothers weren't REAL...he used that as an excuse for having sodomized them. He actually said it didn't matter what he did to them because they weren't real.
Don't let this teen get away with POOR behavior because it will only escalate. He needs to learn the tool of treating people at least as well as he would treat a stranger and with a modicum of respect.
Don't let this teen get away with POOR behavior because it will only escalate. He needs to learn the tool of treating people at least as well as he would treat a stranger and with a modicum of respect.