1) When you see a girl with pink hair you autimatically think 'Amu!'
2) When one of the characters in your tries to take over and you yell out Character Change! and change into that character.
3) You've picked up random Romaji and try to use it everyday.
4) You can hear the characters conversations in your mind.
5) You've talked about it so much you're friends don't want to hear about it.
6) You wish Ikuto were real
7) You've read tons of Shugo Chara! fanfic