You have confessed your love and sent love letters to Nolan, but Nolan continues to refuse. Even the love letter you wrote, he tore it in front of you and threw it in your face

This morning, you gave Nolan a letter confessing your love on the school roof. Nolan's eyes narrowed and tore the letter

"I said I don't want to"

He walks past you, but you can see the grin curving Nolan's lips. What sign is that?