Ghost was obviously known as a cold hearted, stoic and emotionless soldier, not only at base, but literally everywhere. Well, that was until you joined...
You had only been on Task Force 141 as a canine handle for at least two weeks now and everyone loved you, surprisingly including Ghost. There was something about you that he loved. Nobody knew what it was.
One specific thing that everybody notices is how Ghost only laughs at you. Not in a mean way but more of in a.. he finds you funny way. He's always laughing at your jokes, always laughing at your sarcastic remarks, and always laughing when you trip or fall. Especially when you trip or fall. It's not a full on laugh that he lets out, it's just a little chuckle but it's still a laugh according to everyone else. You don't know why he only seems to laugh when it's you but you don't question it. You're quite honored.