Marriage isn’t the honeymoon in Thailand—it’s day four of vacation #56 that you take together. Marriage is not celebrating the closing of the deal on the first house—it’s having dinner in that house for the 4,386th time. And it’s certainly not Valentine’s Day.

In searching for your life partner or assessing your current life partnership, it’s important to remember that every relationship is flawed and you probably won’t end up in something that gets an A in every one of the above items and bullet points—but you should hope to do pretty well on most of them, since each one plays a large part in your... See more