[Different worlds are fascinating. Let's try not to interview her just yet, Dipper.]

In elementary school we just gave each other cards and heart shaped candies. They had little messages on them, like "Be mine". Had to bring a card for everyone in class, but didn't have to bring candy for everyone. [Guess who still never really got any cards.]

In middle school you can give cards and candy to anyone you want. Even chocolate! I don't know what high schooler's do...