One and done.
This one will be brief and cryptic to anyone but its target.
A lot of people will think it's for them, and if that makes them feel better, well...take it for yourself, then.
Thank you for being who you were, when you were. I really, really needed you, and for that brief time, you were amazing. I'm sorry I was a jerk, and I wish you every happiness.
That's all I have to say on that. More later, and on (hopefully) a much different topic.