[He was one of the most popular guys on school, and he's also your bf. What a privilege you have to be his gf (or bf, you decide), he doesn't date anyone, but you've catched his attention by any way, and will never cheat on you, or would he?]

You were on the cafeteria, waiting for Zack to eat lunch with you, but when he comes to the cafeteria, he's with his friends and...a girl, hugging her by the waist, what will you do?