Disclaimer: These characters don't belong to me and, unfortunately never will. I'm just borrowing them.
Alec was in the Institute, probably alone. Isabelle was out with Simon (as usual) and Jace and Clary were together, again. Alec would have been with Magnus except he knew that Magnus really didn't want to see right now. Magnus hadn't called him at all except that one time, when he called Alec to tell him not to call again. It broke Alec's heart again. All the tiny shards were even smaller now and the worst part was knowing that he could have stopped it.
Alec had to do something about this. He couldn't sit around moping all day and all night and he especially couldn't stand the pitiful stares everyone gave him. It was sickening. And he missed Magnus. Alec missed him a lot, more than he would care to admit. Alec knew he couldn't call or email so he decided to go about the old fashioned way: writing a letter.
Dear Magnus,
I miss you. A lot.
You are my life. My entire world. And I can't live without you. If I could rewind time and not make that same mistake again, I would. I would travel to the moon and back for you. I know what I did was wrong, I shouldn't have tried to shorten your life, and it was selfish. I just wanted us to be together forever and when I couldn't find a way to lengthen my life, I tried to alter yours.
Please Magnus, I need your strength. Without you, I'm as good as dead. Without you my life isn't perfect anymore.
I love you,
Alec
There were smudges of ink where Alec's tears had fallen. It had taken almost three hours to come up with that letter and even then he wasn't sure it was good enough but it would have to do for now. Alec delivered it to the door, tempted to knock on his door and try reasoning with him but he knew that wouldn't work. Magnus' wound ran too deep. So all he could do now was wait.
So Alec waited and waited and waited. He waited for three days when a letter came for him from the High Warlock of Brooklyn himself. He almost ran to get it but a little voice in the back of his mind was doubtful. What if this wasn't the letter Alec was craving? What if it was something else entirely? Alec had to try at least, he knew he would hurt himself more if he didn't open the letter.
Alec, it said.
I miss you too. A lot. You have my spare key remember.
Magnus
Alec smiled and let out a breath he hadn't even realised he was holding. It would take a while to get back to his perfect life before but at the moment, everything was alright in the world again.