C’mon… you’re not actually equating an “I love you” with a bank statement, are you? If a stranger comes into my home and sees my bank statement, there is the potential for identity theft. No such problem exists with an “I love you” on the fridge.
well of course any analogy is exactly that an analogy not an identity. but it seems to me this is a pretty good one. a bank statement is private and, for whatever reasons, one would not want others to see it. the maker of the analogy here is assuming that love letters between a husband and wife are also private and one should reasonably not want others to view them, for different reasons than identity theft.
true one can bring financial ruin and the other may cause no harm whatsoever, but the point of the analogy is that a reasonable person should have a strong desire to keep both matters private, albeit for entirely different reasons.