My Best Friend's Boyfriend Prologue

Sakura has always been in love with Sasuke but Ino was in love with him first. One night, Sakura and Sasuke make love. How will Ino react to this

(NOTE: PRETEND THAT NARUTO AND SAKURA ARE BROTHER AND SISTER)

My name is Sakura Haruno. I have always been in love with this boy named Sasuke Uchiha since childhood. But, I'm always too shy to reveal my feelings to him. When Sasuke had first entered the Academy right before Itachi had killed the Uchiha Clan, my best friend, childhood friend and rival Ino Yamanaka had always been in love with him. When I first learned this from my girlfriends, Hinata, Temari, and TenTen, I just didn't want to accept it. I then started becoming friends with Sasuke.
The only people that could comfort me were Hinata, my younger brother Naruto, Temari, and TenTen. My father Jiraiya, and my mother Tsunade, (also known as the 5th Hokage)
had always told me to marry someone else. Someone like... Rock Lee! Oh God! I can't stand him! He's always following me like a lovesick puppy dog. He's so annoying darn it! Anyway, my name is Sakura Haruno and this is my story.