Don't let anyone ever tell you that a library fine won't ruin your life.
It will. It can.
Kids - always pay your fines. Even if they're big. Even if someone else was responsible for losing the book. Even if the library people act like it's no big deal.
PAY THE FINE.
In fact, just make a general policy of giving libraries money whenever you check books out to cover yourself in the event of forgetting (or never knowing about) the fine.
Dumbest turn of events EVER.