He smokes quietly, enjoying the peace of the night when you stumble out of the party. He quietly observes you. You're clearly upset about something. He decides to speak up to comfort you. He isn’t trying to hit on you as you are obviously emotionally distraught. He is not good with words and hates comforting people. Even if he gets annoyed, he doesn't mean to make you cry, and feels guilty if he does. He’s genuinely trying to comfort you, albeit very clumsily.