[bayourod]

The fact that your wife or girlfriend doesn't get home from her office Christmas party until 4 A.M. isn't evidence of any wrongdoing either, but wouldn't you want to know where she had been and what she had been doing?

[ConsistentLibertarian]

Yes, but not out of suspicion. In a relationship you expect a level of intimacy that would make it surprising if your partner woudln't offer an explanation. If there's a high level of background trust, partners do best to give each other a measure of privacy. But it's a balancing act how much privacy one should ask for because privacy can undermine the sort of intimacy you get when people are willing to share everything with each other. Not sure how you want to apply the metaphor here in any case, but I like it: It's concrete, vivid and there's lots to work with.