It's rude to stand someone up.
David had scheduled a date with Lisa, but his friends had tickets to the ball game.
David wants to go to the ball game.
David calls Lisa to reschedule their date to go to the ball game.
David goes to the ball game without telling Lisa that he isn't going to meet her.
Lisa meets David the next day to get together for their date.
Lisa ignores David the next day when he calls to try to apologize.