One side of his mouth turned up in a crooked smile; he was glad his attempt at being there for her hadn't made her uncomfortable. He ran his thumb lightly over her hand before letting go, not wanting to make things too weird for her.
"You can always ask me anything. Sirius is the expert, since he's been here the longest and has read up on the books. But I'll tell you anything I know as long as you're sure you want me to," he assured her.