It's rude to expect others to always include you.
Dana is told by her friend Mindy that she is going out on a date with a guy she's interested.
Dana wants to respond to Mindy.
Dana tells Mindy she should have fun on the date.
Dana says that she should have been invited on Mindy's date.
Mindy will think that Dana is a supportive friend.
Mindy will be annoyed that Dana is inserting herself into a date.