Help finding a MF/HP fan-fiction?

Okay, I'm dying here. I read a Marcus Flint/ Harry Potter fan-fiction that was written for a hp_kink on live journal, and now I can't find it. I know that it started with Harry falling in the Library, Marcus catching him, and a subsequent friendship forming based on that. It's basically a rope-bondage friendship thingy, I think pre-slash. Anyone heard of it?