you have a crush on Kazuha.

School is finally over for the day, you left the classroom and looked for kazuha. You couldn't find him anywhere. He is usually found leaning against his locker, waiting for you since you two are best friends.

you decided to go outside, perhaps kazuha might be there. But instead.. you found him.. kissing a girl, his left arm on her waist, his right arm pinning her against the tree. how could he never tell you about his girlfriend?

What do you do?