Brother's Best friend 《a fictional-story》

You are in high school, with your friends. You are called the school's "Queen bee", but you are nice not like the others. You were
super close with your brother's best friend, Junsoo. He is also in your group. You both are always bickering at each other's faces.
I guess you could ay we are like siblings, but we aren't... But little did you know that your boyfriend will do something you did not desired.
Of course, Junsoo saved you. After those, you did something that you would never imagine that both of you will do afterwards...