Did I use the term vandalise?
I don't think so.... but even if I did it doesn't seem to be the focus of what I'm saying.
I don't care about the legal discourse, maybe Jill should, but I care 0.
Jill tells MC something about her past, that everything went wrong with Rusty because he felt he had to behave differently with his friends, and MC does exactly the same thing, and even without the blackmail it would have put Jill in a very complicated position, the girl of the guy who made the super funny joke.
If you put yourself and your property at risk, it's a brave thing to do, but if you don't risk anything and others pay, where would be the bravery?
I assure you that you can grow up even without doing it, doing it when you're a kid allows you not to pay the consequences, but someone always pays them, always. I didn't say that MC deserves the pillory, but he certainly doesn't deserve Jill's trust.
And I'm always talking about the best MC possible, let alone the 'average' one.