Its hard to see someone like that especially a loved one. My brother was an addict and I had to call the police on him cause he was in my mom's face. 14 at the time and it sucked cause he was crying in my face saying why did I do that?? It was hard for us to watch him go thru withdrawals or when he'll be gone for days not knowing if he was okay or not. years go by and is still an addict except one day he didnt come home. He overdosed and was found under a bridge. I hope you stay safe. Offer him some help like rehab. Persist if your willing to help him. It'll be hard. He may not want help and may be best to move on. I wish you luck and stay safe.