Who says you don't learn anything from animes...
"Getting jealous of others is part of love. Love is like a mirror that reflects your bad side. Especially when its unrequited, you get envious, jealous, prejudice and resentful. You have to face all sorts of emotions. But there is no reason to find that shameful. It shows how serious you are."
- Margery Daw from Shakugan No Shana. Season 2, Episode 06.