My wife has gone through similar with my 13 going on 20 step daughter. Constantly clashing, real edgy feeling in the house because you never knew when one of them was going to say something that set the other one off just generally a very combative relationship.
Step daughter moved out and back in with her dad approx. 4 months ago now and now the time her my my wife do spend together is great no arguments, no stress, no edginess in the house when she spends weekends with us. Him going off to uni might actually be exactly what you both need to repair your relationship.
Yeah cheers all. I've got used to just basically distancing myself from him where possible and letting him do his thing, then when we do see each other it tends to be better. I think it's like that holiday syndrome thing. For some people, even their own partner they end up hating at the end of a long holiday because you spend too much time together every day. I think the less time we spend living in the same house it will be better, but yeah...I will miss him. Looking back, I suppose I became like this to an extent with my parents, but I sure as **** did not speak to them the way he does.
I think the problem these days is they feel invincible as they know you can't really touch them physically so they push boundaries.
In some ways - not condoning it in 2023 as things have changed - I think things were simpler when you stepped out of line and your old man gave you a good slap.