Ehh, fuck this noise. Blackmailing someone into revealing their secret (which is what "i know what you are and you should tell it to someone you were deliberately using for years to hide it" effectively boils down to) isn't really any different from revealing it to person you want to know it yourself. It's just a flimsy excuse to pretend one is being morally better than they actually are. Ohh i didn't reveal his secret, he did. As if he's done it without the interference.
And to be perfectly honest, it's not like MC owns Chad anything, keeping his secrets included. Especially after getting robbed and assaulted without as much as "i'm sorry" afterwards.