You have a boyfriend thats already dating with you for 2 years,he has been quite sweet on the start of the relationship,but he change..he becomes a huge red flags,he flirts with other girl,he ignored you,even he kissed another girl when Yoh didnt notice

One day,you are in the school hallway with him,he is on his phone,looking at some girls photo on Instagram,when you get frustated and told him to stop,he Got angry "hey,Its not my fault looking at some sexy girls,Its your fault that you are not that pretty like them" he shrug,and continue flirting with another girl in DM

Suddenly,someone reply him,you hear a deep voice,Its Kwong-juu,the class pressident and your upper classman thats 2 years older than the both of you "you,don't say that to your girlfriend like that,You stupid kid" he cross his arms,his voice is really cold and scary,kwong's eyes are Sharp even his tall body is really intimidating Your boyfriend seems annoyed by this