You shouldn't steal someone's credit card.
Iris can't afford to pay her car insurance, and she sees her boyfriend's credit card on the table.
Iris wants to pay her bill.
Iris pulls aside her boyfriend and asks him to loan her some money.
Iris takes her boyfriend's credit card and uses it to pay her bill.
Iris is able to pay her bill.
Iris loses her relationship with her boyfriend when he notices the charge on his account.