Prompt: Grant goes to Venice to try to talk Jonathan out of this nonsense. Or is sent to deal with the dangerously crazy magician, since they were friends. He wants to save Jonathan. Jonathan sees he's distressed and wants to comfort him but can't. Just give me all the sad sad ruins of their friendship/moreship.

Fill, still currently a WIP: http://jsmn-kinkmeme.dreamwidth.org/1273.html?thread=170745#cmt170745