Boy: If he does make it to your best friend's birthday party (it's a miracle!) he wants to bail immediately if it's not his scene.
Man: He'll make the best of it, even if your best friend's bday party wasn't his first choice of social engagements for the evening. He'll make conversation and be pleasant and not whine about missing the game. If he said he would go, he'll go because he honors his commitments. Of course, this means you'll have to watch the game with him later. But you don't mind.