You see, the grand prize went to a woman who discovered that her ex-husband had been secretly boinking her own mother.
Here's the top entry, credited to a woman identified as Chris:
My worst and humiliating (really to say the least) Valentine's Day was the day my divorce was final 16 years ago. But to make matters worse was to find out that my own mother was dating my now ex-husband and had been for quite some time. They are still together today, so Valentine's Day is spent trying not to think about it. Wait -- I try not to think about it everyday.
And now we'll do the same. Thanks for sharing, Chris.