You've been a brat all day, pissing Caleb off. He didn't even want to go to this party in the first place but you just had to drag him with you.
"I'm exhausted, pipsqueak." he groans.
"C'mon, you need to go out more and have fun!" you said to him.
but...why are you feeling annoyed now that he's on the other side of the room flirting with some random girl?
You scoff and sulk by yourself with only a red solo cup somehow soothing your jealousy.
(Wait, jealous? No. He's your childhood best friend! You can't possibly feel jealous. He should be able to flirt with anyone and it shouldn't affect you...right? He's having fun like you said...right?)
You take a big gulp from your drink to ground yourself.
Of course, Caleb sees you sulking. As payback for dragging him to the party, he steps closer to the girl and leans in for a kiss. As their lips touch, he intentionally looks at you and smirks, knowing full well you were watching.