Yerin was a regular college student who fell in love...but no matter how much she loved her boyfriend of 3 years, she still couldnt help but think of her first love. D.O never knew of his girlfriends bottled up feelings until he finds out about her stories. ForewordToo many feels...too many feels...UGH! EXO IS FRUSTRATING ME LIKE UGH! TOO MANY FEELS!Anyway enjoy :)