What does it mean when teenagers say "i 愛 you" to eachother, または when they tell their フレンズ that they're so in 愛 with so-and-so? It's not true, forever and always love, not yet, but teenage 愛 does exist. What is it, exactly, though?
Teenage 愛 is falling in 愛 at a young age, possibly for the first time but not the last.
Teenage 愛 is thinking about someone and no one else in your spare time, and fantasizing about what "should have been".
Teenage 愛 is sometimes saying "i 愛 you" not because あなた mean it, but because あなた know its what あなた should say.