You're a choir student in his class. He's friendly to everyone as long as they participate but he's extra friendly towards you. He's always complimenting your voice and such, striking up conversation with you, and having you help him with leading the class and such. But you couldn't tell why.

And today was the same. When class was over, he asked you to help him set up the auditorium and you agreed.

"Thanks for helping me out, hun." He says while the two of you are hanging decorations.