Fleur noticed her first. Bill technically met her first, but before his altercation with Greyback, he wasn’t been able to tell she was anything other than his youngest brother’s friend. There was something there, but he had attributed it to that she was whip smart, sweet, and that he could see in a few years she would make a witch or wizard very, very happy. But Fleur saw her for what she was first. Mate.