He thinks about it and then smiles. "I think I'm incapable of imagining it. I'm glad this place gives me a chance to see you as something besides the leader of Torchwood."
He will always see him that way to some extent but this place let's them be more real, lets him see Jack relax in situations he never would get to at home and that opens up a whole new part of their relationship for him. It's wonderful to see and it makes him step closer, wrap his arm around Jack's bare waist as they walk. Another thing he never would have done at home.