My (all too) personal experience as a step dad to teen kids is this. If a teen is hell bent on out doing his last fk up regardless of consequences, there isn’t a damn thing a parent can do about it. The kids live in an alternate reality that they believe is defined by rap music lyrics, video games, and utter disrespect of anything resembling a civil society and right/responsible behavior. My advice...never, ever, EVER marry someone with kids. EVER! Emancipate em and give em an early calculated inheritance and file a restraining order.
The voice of experience.
Teen children can put parents or stepparents I all sorts of financial or legal jeopardy.
Get them far away from you.