Calm down, calm down, we have a misunderstanding.Wait a minute, what are you talking about?
Is the guitar the property of Fuckface?! Yes.
Taken the guitar (stole) Chad?! Yes.
But if Fuckface telling Sage about it, it means he shits on her boyfriend ?!
Are you serious?
Is that, in your opinion, not the right thing to do, and Fuckface shouldn't have done it? What the fuck? He came for his property. And let them both be grateful that he didn't report about them to the police.
I agree MC is absolutely in the right here. BUT, that was in the context of this situation as it could be perceived by Sage who doesn't know any of these details. So, as far as Sage is concerned, she might view this as some random dude who tried to hit on her, now coming to her with a made up story to make her boyfriend look bad. Either because he got picked on by Chad and is sore about it, or simply because he's hoping that he'll somehow drive her and Chad apart and becomes a replacement, or some similarly stupid scheme some thirsty dudes might come up with.