In 2002, when rapper Nelly and former Destiny's Child singer Kelly Rowland teamed up for the chart-topping hit "Dilemma," they had no idea that they would be creating one of the biggest mysteries of our generation. In the video for the song, Nelly and Kelly played the role of two people who liked one another, but they could not be with each other because Kelly was dating someone else. However, just when things started to look like they could work out, a texting mix up put a damper on everything. If you recall correctly, Kelly was using an Excel spreadsheet