Ok...I've just about had it, I think.
My oldest child is 20, and is living with her fiancee in another state. She's never been what you'd call responsible with money. To my knowledge, and from what I've seen, neither has her fiancee, who is also 20.
They moved in with me for a few months last year, and couldn't find jobs right away. So in the interest of keeping their credit in decent shape, I paid some of their bills for them, along with mine.