Dear The friend I see as a brother (on the topic of getting high),

You told me the other day how you got high the other day with some of your friends. I couldn't tell if you were just saying stuff or if it was the truth. It was just weed, so I told you it wasn't a big deal. The truth is, it makes me nervous. I first got high off weed when I was really young. I only ever did it twice, both times with the same person. The first time I did it, I woke up in one of her friends' houses not remembering how I got there. The second (and last) time, I let things spill about myself that I never planned on telling anybody. I think if she hadn't moved away soon after that I would've kept getting high. But since then I've sworn to myself against ever getting high again. I'm too afraid of what I might blabber about.
I'm nervous that you'll ask me to get high with you. I'm nervous I'll say yes. I'm nervous I'll say things and you won't act the same around me again. I'm nervous I'll fall asleep and wake up somewhere I don't know and you won't be there. I'm nervous that you will start off on weed and go further, into opioids, like so many other people around here. Is it fair of me to worry? Is it terrible of me? It isn't any of my business. I'm not your father. I'm glad I'm not. I wouldn't be a good father to you.
You know what the worst thing is, my friend? Ever since you told me that I haven't trusted you as much. I've found myself snapping at you even more than usual. It's embarrassing, especially with how common it is where we live. What's the big deal? Well, it's that I've known a select group of smokers, and the ones I knew pretended to be chill and laidback but beneath it all they were rotten people, at least rotten is how they acted to me. I know you won't act rotten to me. At least, I hope I know that. I think you're a little too naive to act rotten to me; I think it's me who has been rotten to you most of the time.
Well, anyway. I felt like I had to write this. I'm too much of a scaredy-cat to hate to imagine you getting high. Especially at our age. You'll do even worse in school if you keep going. Maybe you'll be found out enough times and kicked out, and then you won't even live by me anymore, you'll be back in YOUR home state, with YOUR family, and I won't be able to invite you to dinner like I promised I would. I would be so sad. Is that understandable? I'm not sure. I hope you never read this. I hope I never have to work up the courage to actually tell you how I feel. I hope we never get high together. I hope we will always be friends.