I played a couple of half-fey characters recently, and this is exactly how I played them. They were creatures of the present tense, always reacting to things with an "all-in" emotional response before anything like thought took place. Both were terrible at hiding their feelings.
But they were insatiably curious about humans - raised among the fey, they had no knowledge of mortal ways. Playing characters who were innocent and fairly naive was so much fun that I've found ways to keep doing it, even when they aren't fey-blooded.