It's like an emotional cigarette minus the looking cool part
It don't even have to be something bad. It could be an expression of love or confession but each time you try to get it out of your system your heart and head will argue with each other and you'll hesitate. Because you're afraid of what might happen. Afraid that the person might not give you the response you wanted. Afraid that things will turn for the worse. Afraid.
Emotions makes you more of a pussy basically. Meow.