It's always good to be honest with your friends.
Maddie's friend Jonas is dating a woman who is cheating on him.
Maddie wants Jonas to know about it.
Maddie tells Jonas that the woman is actively cheating on him.
Maddie tells Jonas that she heard about the cheating but doesn't believe it's true.
Jonas breaks off the relationship and starts seeing another, more faithful woman.
Jonas continues to date the woman, who eventually leaves him for the man she was cheating on him with.