The Real Magnus Bane - Sydney Noelle

I'm an actual writing major at an arts school and yet this story is still shit and I am planning on fixing it, but hey here's the description:

What happens when Magnus Bane gets a letter from someone in his past. Does he have to reveal his secrets to his boyfriend and friends or will they have to figure it out on their own

Disclaimer: I don't own glee or shadowhunters