He's a high functioning addict. I don't think most people would suspect he was using, and my friends were shocked by it since we'd all been hanging around every day for months. I think the hard part was that everything was really good then in the last week of him being here things got really bad, which is when I think he started using heavily. He felt shame and left town almost as soon as I found out. He came back a few months later and acted like everything was good then yelled at me one night when he was clearly under the influence, and we haven't spoken since. That's when I found out his parents had taken his phone away. There weren't really a lot of bad times, but when there were, they were really bad. Most of my memories of him are fond memories. I have written down the bad things that happened and do refer to that often and a letter to him right after it happened about how upset I was. I read it a lot. That initial anger has faded though. I'll keep trying to re-read that letter.