You show nothing, Jon Snow.
For being a hero of the Night's Watch, the Game of Thrones character spends a lot of time looking dead inside. Of course, that's far from the truth. Between being the bastard of the late Lord of the Paramount North, losing family members left and right, fighting romantic feelings and upholding his moral duties -- not to mention, you know, the Wall -- it's no surprise Jon Snow holds back on his total roller coaster of emotions.
Fortunately, binge-watching the complete series in about a month is basically like taking a crash course in Crow feels.