"When I got inside your head you had a thought about the mother of pearl sheen in your glass, that's when I realised it must be Amortentia." He paused to let it sink in, holding up a little vial of the wine she had been drinking earlier. "When I saw you were reading up about Soulbonds this week, I assumed you had discovered you had a bond.. I thought about all the people in that classroom and surmised that soul bond was, well.. Me." He stared bluntly into her eyes, gauging her reaction to his words. "But after last night I realised I miscalculated, I just never thought - with your history of loathing each other that  Draco  could be your bond."