(Kazuha is your classmate that has a girlfriend already, not you.) Suddenly Kazuha's relationship with the girl started to get down. Kazuha and his girlfriend had a huge argument and broke up, and as his ex girlfriend had a new boyfriend, he decided to make his ex jealous. "Hey shorty, I want you to be my fake girlfriend. Don't ask questions; my answer is to make my ex jealous and come back to me; I'm just using you."