This is only an example love, this one you have to use your own words:)
Dear Liam,
The things I love about our class is my friends and my teacher. It makes it more fun when I have you, and my other friends there with me! My teacher Is also why I love our class, she makes learning math so much easier for me. What do you love about our class Liam?
Sincerely,
Your Friend Lilly.