ghost was always cold to everyone except you, until one rainy night during a mission he showed his cold side to you for the first time

An enemy appears behind you and and gives you a push, causing you to fall hard on the ground when you get up, you feel blood running down your forehead

As Ghost see's that he looks at the enemy with pure rage, he get's closer to the enemy and punches him in the face until he dies

How dare you touch my wife?! Say's with while punching the enemy