You shouldn't abandon people.
Madison is shopping with her friend Jill, when a good looking guy, Ken asks her if she wants to grab a bite to eat.
Madison wants to go eat with Ken.
Madison tells Ken she would love to grab a bite to eat as long as Jill can come too.
Madison just walks away with Ken to get food, leaving Jill behind.
Jill thinks Madison is a good friend and the three of them have fun together.
Jill feels betrayed and alone by Madison's actions.