It's wrong to lie to the people in your life.
Mark and his girlfriend are invited to a friend's house for a party Friday night, but there will be drinking.
Mark wants to be able to see his girlfriend.
Mark invites his girlfriend over to watch a movie instead of going to the party.
Mark tells his mother he is going spend the night at a friend's house, but goes to the party.
Mark gets to see his girlfriend and stays out of trouble.
Mark's mother finds out about the party and grounds him for a month.