#1. Kelly Kelly & Mike Knox - WWE romantic storyline
When WWE brought back ECW in 2006, there was a lot of fanfare about what direction this version of ECW would go. Of course, being under the WWE umbrella, there were a lot of things they couldn't do that were done in the original ECW.
One thing they did bring in was Kelly Kelly's Extreme Expose. Kelly was an exhibitionist and performed for the fans each and every week, removing her clothing. At the same time, we were introduced to Mike Knox, who was Kelly's jealous boyfriend who came out and covered her up every time.
Eventually, Kelly Kelly turned her attentions to CM Punk who she began to like, which in turn made for a mad Mike Knox. The couple eventually parted ways and Kelly went onto have a great career in WWE.