After finishing with her since last October/Nov and been much better behaved in school and at home, gf had moved on had a new boyfriend etc found out yesterday he is back with her! And kicked off when asked about it, denied it and got really defensive tried to attack his brother with a knife, hit his sister and punched the wall because he had 'rage'.
This behaviour of his had stopped and hed Admitted how bad he had been, once he had finished with gf, she had allowed other boys in her class to msg racist remarks to him of her phone, which resulted in him kicking off in school. Previous to that he'd run off started smoking weed and vaping and self harm /overdose and having sex at 14 which messed him up.
He seemed to have grown out of this when they split. But now all back plus more violent as soon as her name mentioned
At a loss at what to do as want him out of my house. He's 15.