Lily was telling her one of the funniest scenes she had witnessed between the two Slytherins, but Rose was thinking about something else. She wanted to reach Trevor. It was clear that he had something important to tell her. Her cousin noticed her change in mood and asked her about it. Rose explained she had something to do, and Lily didn't ask any questions: she had had her eye on the Hufflepuff Seeker for a while, and all that talk about sex had made her want to go and find him.