When you realize that one person does things to bug the fuck out of you, including liking someone because you do and their jealousy eats them up it is just as funny because they can never do anything about the other person you like.
It is kind of how girls will never like a guy until another girl likes him, then everyone has a crush on him. Only this time unless she wants to reveal just how jealous and fake and petty she is then she can't.