You shouldn't back out on an agreement with your partner.
Tom promised his wife, Susan, that he will mow the lawn today but remembered that he is supposed to meet some friends at the bar in less than an hour.
Tom wants to enjoy his evening.
Tom quickly mows the lawn as promised before heading out to the bar to meet his friends.
Tom forgoes mowing the lawn in order to go out to the bar with his friends.
Susan sees that the yard looks great and is pleased with the job Tom has done.
Susan is upset and disappointed that Tom broke his promise.