Love Tarnished: An Alien's Tale

Clark Luton accidentally landed on the Earth due to a spaceship crash and met Wendy Falcon. He fell in love with her and helped her become the heiress of the richest family. Seven years later, he found out Wendy had been cheating on him for a long time, and they even tried to kill him. As an alien with superpowers, how would he take his revenge?