He's so private that it's difficult, even if he doesn't mind people knowing. Severus has never imagined being in a situation ('situation', like having a girlfriend is a situation), even at home.

"Did you need something?" he asks finally, turning his head again - complexion his regular sallow shade. Where someone else might sound hostile, Severus curbs his tone gentle. It's Lily, after all, and she must be here for a reason. Repaired as they are, he's not sure they're quite at random social call level.