A James and Lily story

You're walking down the draughty corridors in silence, but it isn't exactly an awkward one... more like loaded. You can feel him walking next to you, back straight, staring forward in a way that seems almost forced. You can feel him, but you can't see him, because you too are keeping your gaze fixed on a point somewhere far in front of you, and when that fails, determinedly looking anywhere but at him. You're still somewhat mad at him, and you're quite sure that he's mad at you (because he has every right to be) but the pair of you are Head Students, so you have to patrol, whether you want...