Im Yoona:Shes turning 21 years old (22 in Korea).  Shes been put up with a lot of stress lately with SNSDs upcoming Japanese album.  She is in a relationship with Choi Seunghyun of Big Bang. Although they seem to be an unlikely couple, they have successfully hidden their relationship for one whole year.  Choi Seunghyun:Choi Seunghyun is the main rapper and the eldest in Big Bang.  After trying to pursue Yoona for such a long time, he finally wins her heart.  In fact, their one year anniversary had just passed.  He is very caring and affectionate.  Because of the possibility that the fans may hurt Yoona, he decided to keep the relationship a secret.Additional couples:1. Yuri and TaeyangYuri and Taeyang are the only ones in the five SoshiBang couples to be open in their relationship.  They have been together for one year and seven months.  They hooked up Yoona and Seunghyun.  They are also responsible for the relationship of Sooyoung and Daesung.2. Sooyoung and Daesung:Sooyoung and Daesung have been dating for seven months.  In their relationship,  Sooyoung has been the dominant one.  To SNSD and Big Bang, they are known to be the comedic couple.3.  G Dragon and JessicaJiyong and Jessica are the shy couple.  Although they arent officially together, they are still getting to know each other.  They are known to be a shy couple because of their lack of ability to show affection in front of their own group members.  They dont show affection, but they still are interested in each other.  They secretly talk to each other on the phone and text each other everyday.4.  Seungri and SeohyunSeungri and Seohyun were nicknamed the "Maknae Couple" by their members.  Even though they are both the maknaes, they are complete opposites.  Seungri is more outgoing and wild while Seohyun is composed, calm, and tamed.  The two arent an official couple.  Seungri is doing whatever he can to impress her while she does whatever she can to ignore him. ForewordNote:  This will only be a one shot.Seunghyun and Yoona have a misunderstanding before Yoonas birthday.  Jealousy gets in between the both of them.  Although Seunghyun really cares about Yoona, he still finds a little green monster on his shoulder after seeing Yoona being paired up with other men.  Yoona on the other hand finds it uncomfortable with Seunghyuns scandals with other women.I would like to give credit to Nomadzs for the beautiful poster! :) I would like to greet our dear Yoona a happy birthday!  Even though its not her birthday in Korea anymore, its still her birthday in America!  I would like to wish her great health and happiness throughout her life!