"be polite. be friendly. avoid her eyes, and her hair as well, do not look at her legs, do not look for flirty subtext in her casual conversation. ask the right questions. don't stammer. remember you are not 13. don't look at her and smile and say 'I love you' when all you should be saying is 'goodbye.'"
tried not to worry; after all, it's just a crush.
after all, I am not really in love with you that much.