Truly now? I'm certain most people have lives outside any one person's attention.
[Y'know, unlike her silly bird. On the other hand, the two of them being brought to Kiseki might have highlighted how, erm, much of a life Sebastian has outside their married life.
Anyway.]
An aquarium is of course a rather nice touch most anywhere, provided it is well kept. [He... approves?] Don't you think?