It's bad to act childish if you're an adult.
John and Mindy are thinking of watching a movie tonight in their house and Mindy has picked one.
John wants Mindy to watch the movie he picked.
John asks Mindy if after they watch her movie she would like to watch his.
John whines at Mindy and cries out that they should watch his movie and says he won't watch anything otherwise.
Mindy feels respected and loved and gladly obliges to watch both films.
Mindy loves John less and feels he is immature and feels depressed.