My dearest Button,
If you are reading this, I first want to apologize for everything I've done. I can only imagine what you've been through learning that I tried to steal all magic and take over Equestria. It was cruel and selfish, and I know I hurt you by not turning out to be the friend you thought I was. I doubt this will make things better, but I want you to know that I'm so sorry.
I imagine you're wondering how I could send this letter even though I was sent to Tartarus for my crimes. A few months ago, I was taken out of my cell to the lair of this horrible creature named Grogar. He's trying to destroy Twilight and her friends, and he's making me help with Tirek and Queen Chrysalis. He's the reason why King Sombra came back before he was defeated again. I want to warn Twilight, but I'm so scared. Grogar would obliterate me with his dark magic if any of them found out that I even left the hideout much less warned her about what's going to happen.
But I had to write this letter to you. I have found a weakness in Grogar's terrible power, and if I'm careful, I can use it to stop him, Tirek, and Chrysalis before they harm our friends. I doubt this will atone for what I've done, but I have to stop them. Ever since I was imprisoned in Tartarus, I realized how wrong I was. I shouldn't have tried to take away magic; I should have stayed the happy filly that I was, being there with every creature I care about. I miss everyone so much. I miss Twilight and her friends, I miss everyone at the school, I miss everypony in Ponyville, but most of all, I miss you, Button.
I miss seeing you every day with your cute smile and propeller hat. I miss the times we would play on the arcade machine or get milkshakes. I especially miss seeing you strengthening your characters to defeat all sorts of monsters with me at your side, encouraging you.
What I'm trying to say in case I fail is I love you, Button. I've loved you since the day we met. I love you so much that it's unbearable. I want to stay in Ponyville, where I can watch you grow to be a mighty and adventurous stallion like you are in your video games. I want us to travel together when we're older and fight dangerous enemies, go on dates, and get married. You may only see me as your friend even if I succeed and am forgiven for my crimes, but that's okay. We're both very young. I will wait for as long as it takes for it to be you and me for all time.
If I return to Ponyville, you will find me at the arcade machine where I want us to play it together one more time before we start to live happily ever after. Please don't take too long to come. I cannot wait to see you again.
Love now and forever,
Cozy Glow