It's rude to stand up your partner for a date.
Tim has a date planned with a girl at a fancy restaurant but his friends are going to the club that night.
Tim wants to go to the club with his friends instead of on the date .
Tim calls the girl and tells her he can't make it to the date then goes to the club with his friends.
Tim goes to the club with his friends without telling the girl he changed his plans.
The girl is glad Tim at least told her he wasn't going to make it so that she didn't waste her time.
The girl is very hurt and embarrassed to be sitting at the restaurant all alone.