OMG! Now we see why Chelley Bissainthe was so furious!! The Islanders reunited for the Love Island USA season 7 reunion on Monday, and just like the messy season, it brought a lot of drama! There was a LOT to hash out between the contestants - but nothing was a hotter topic than what REALLY happened at the heart rate challenge! As viewers will recall, the heart rate challenge tests whose heart beats fastest for each cast member.