"I admit it, I regret my fucking actions. We don't talk anymore, I know that can change with time but I can't keep doing this. I don't want you to worry about me anymore, and I can't keep comforting you because I feel like I am not affecting your life in a positive way. I feel like I'm weighing you down sometimes, and talking to you would make it worse.
I know I'm making a big deal outta this by addressing the fact through an apology, but I think this is better than leaving you in the dark because the dark is scary :( Please think about me for once, my feelings; they can be easily hurt. I don't know how long I can keep going like this- always supporting you, but still; I want you to be happy, I really, extremely, do want you to be happy. And for you to be happy, I will distance myself from you. I am so fucking sorry bro.
I feel like a burden to you, but I wish you well."
I didn't have the courage to send it to you.