If you don't remember what happened in the previous episode , sehun is currently living with you because both of your parents went on business trip. Then you and mark " broke up " and afterwards, found out he was just using you. And sehun had a plan on playing with you and your feelings. Basically trying to get you to fall for him.
go to our youtube channel to watch first couple episodes - taekook min
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Behind Her Glasses
Fanfictionwatch previous episodes at our youtube channel to understand the situation - taekook min { currently editing }