Heroine: Mei Shiraishi
Secret love for Ju Yao
Jealous object: Tachibana Setohana
Reason for jealousy: The person I like likes her
Retaliation: None
cousin spring
Jealous object: Naruse Kanon
Reason for jealousy: Taking away my brother's favor
Way of revenge: seducing Suzaku Kanade
First Love Kai Hayato
Jealousy object: Kai Hayato
Reason for jealousy: Redeemed by Teacher Xiao Sa
Way of revenge: Entanglement
So, in the end, she and Kai Hayato were together.