#3 The Edge-Lita-Matt Hardy love triangle
By mid-2005, the real-life issues involving Matt Hardy, Edge, and Lita had become public knowledge, via the internet. Fans booed Lita on WWE TV even though she was a babyface at the time. Lita had been romantically involved with Matt Hardy for years, and fans were furious over the fact that she cheated on Matt with Edge. On the road to SummerSlam, WWE used this real-life story on TV, and it did exactly what it was supposed to do.
Fans were heavily invested in the angle, as they were well aware that these three Superstars were involved in a real-life feud. At WWE SummerSlam 2005, Edge defeated Hardy after the latter's head hit the ring post and he was unable to compete. Hardy took revenge at Unforgiven by defeating Edge in a Steel Cage match.
Corey Graves deleted his Tweet! More details HERE.
A few weeks later on RAW, Edge defeated Hardy in a "Loser leaves RAW" Ladder match with help from Lita, finally putting an end to the feud. Hardy soon made his way to SmackDown while Edge went on to become a top star on the red brand.