How does Gabe's character stand apart from the others in Act 1, Scene 9?

In the middle of all this volatility and uncertainty, there is the character of Henry. In the middle of a quartet of characters (Diana and her family) who each sing, with varying degrees of intense emotion and or self-delusion, he is the one who is consistently honest, genuinely caring, and matter-of-fact about himself, his relationships, and his feelings.