One thing he noticed was that when he indirectly said she would visit him tomorrow, she agreed so easily without putting up a fight. It meant she had accepted that they would meet daily.
A smile formed on his face as he thought Hazel was falling into his trap unknowingly. Once he catches her, he will hold on tightly, making her unable to escape his grasp.
He was like a lion, and she was like a lamb. The Lion always tricks the latter, telling her he is lonely in the den and needs someone to play with him. Then the Lion pretends he had stopped eating the meat and the innocent and kind-hearted lamb believed him even though her friends have warned her that the Lion was a big manipulator.
The lamb willingly comes to the den, so they can be friends, but the Lion wastes no time relishing the sweet meat. And once he had tasted the meat, nothing compared to it.