If somebody you know suffered a disappointing date brokered through a match-making website, sharing the comment “There are plenty of fish left in the sea” might be highly inappropriate. This is particularly true if the site happened to be PlentyOfFish.com, as she will think that you are making a horribly cruel joke at her expense.

Depending on the degree of catastrophe that was experienced (and eventually comprehended in the aftermath), your well-intentioned journey from Mars to Venus could result in an articulated knee to the gut… followed by black-eye-prostration… followed by one or two cracked ribs… followed by….