My underage friend is in a relationship with a 30 something-year-old

Yeah, I can understand not telling. Just continue to be her friend and be there for her when this “relationship” inevitably fails or falls apart.

>I know how Jow Forums works
>first sentence is I am a girl
kek

How the fuck do you get into a club at age 16?

Your friend is human garbage and so is the thirsty fuck she's with. Tell her parents. They don't need to support an unironic whore anymore, and if she thinks she can act like an """adult""", then she can get the hell out of their life.
>what you suggest is destroying 2 lives at once without taking into account their current life and life goals.
Not him, but they're both degenerates and they would both deserve it.

What's the age of consent where you live? If it's 16 then she isn't underage