Wise-Parker Rule of Three

A misperception of the amount of time passed in someone else's company. Typically, the time dilation is by a factor of 3, however, it may be less with less intense feelings.

Guy: WHAT its already 3 oclock? We've been been together for three hours already?? Its only felt like one.
Girl: Wow, we are awesome. We just validated the Wise-Parker Rule of Three!