Couldn't he just say good-night to her the way you would say good-night to a normal person? Instead of attempting the chivalrous gesture as the flipside to all the boorish talk about sex his friends bring along?
I feel in reading him in a lot of this that he thinks he's really sophisticated and charming and his writer agrees, so has other people respond to him as such, even in situations where I think they'd just be rolling their eyes. Like Kory actually tihnking to herself that she likes him kissing her hand? Yeah, I don't buy that.