Ah, this was great, so, so hot, very fun with the details of this world in which men keep pets and one's standing is measured by the number of invitations one rejects. Harry was lovely, so naive but then so responsive, and I love hearing that Severus wants not only to keep him in style but educate him and travel with him as well.
What's best about the entire fic is that I kept thinking as I read -- "Oh, this is perfect for the_con_cept -- you really created something attuned to your recipient! Well done, Mystery Author!