What makes people think this?
His room was untouched by the Jocks so that makes people think he leaked the Cathy pic and that he's somehow in league with the Jocks.
Last question, Chad when breaking up with Safe looked away to the two girls at the doorway and the camera focused on one of them, I assume its the girl he cheated with or is somehow involved with him. Am I right?
Some people think so, but I don't. We still have that scene in Ep 2 where he's talking to his other "girl", but Melanie is on the treamill in the gym at that time, so it would be very risky to have that kind of conversation in such a public place.
Just because Melanie's biting her lip doesn't necessarily mean it's a sign of attraction as it can also be a sign of nervousness, but being nervous still doesn't mean he's cheating with her as she may simply be keeping a secret for him which is why she's nervous when she sees him knowing what's just happened. Also, if it was Melanie, you would think she wouldn't be so willing to have sex with the MC in Ep 4 if she wants to be in a relationship with Chad.