Like You Read My Mind

Remus Lupin is a very private person. Sirius Black is not. When an experimentation with a Legilimens spell works perfectly well, on the perfectly wrong target, Sirius becomes subjected to the live narrative thoughts of the complex enigma that is Remus Lupin. Maybe in tales of questioning unrequited love it isn't always easier to read their mind. (Marauders era / Sirius POV)