It's rude to ignore your parter for your friends.
Jerry is dating Mindy and also has a close group of friends.
Jerry wants to spend time with his friends.
Jerry and Mindy agree to make friday a friends night and Saturdays a date night.
Jerry hangs out with his friends almost every night and rarely spends time with mindy.
Jerry and Mindy have a strong relationship and Jerry is happy with the time spent with friends.
Mindy breaks up with Jerry because she feels ignored and neglected.