You pick up a gun. You know it is loaded with real bullets. You aim it at your friend. With the knowledge of the consequences, will you pull the trigger?
If you know that your action or words or treatment to another person would certainly hurt him/her, will you still proceed with it?
Being the one who always took the bullets, I can't seem to understand how a responsible and sane person can do that. I do not mean random spontaneous action - that I understand. I can't understand people who demand people to accept them for who they are but refuse to accept the other party for who they are. Not just that, they blame the other party for being weak and sensitive and insist them to puff up while they go around breaking heart.
Bam! Bam! Bam!
You just kill a soul. Again.