Then he will pee in the corner and we will be slightly less happy.
But we will clean that up, and the happiness will return in full. Life will very closely resemble a scene from a French film, where a young couple strolls along the Riviera, staring deeply into each others' eyes, getting to know the person they already love intently. Except, it won't be the Riviera, it'll be a city street in St. Paul, and the young couple is staring at a puppy.