"....he never wants to burden his parents with anything and he never wants to bother his family with any of his problems...."
But he sure as heck is happy to burden/bother YOU with his drug use/lies/manipulation/emotional/verbal /physical abuse. He sure as heck thinks nothing of dumping his problems at your feet and trying to guilt you into picking them up and carrying them for him.
Who he treats like this is a choice. His choice.
It's hard and confusing and insane. But the great thing is, you get to choose, too. Prayers go with you, sweetie~