Eddie Fisher, Debbie Reynolds, and Elizabeth Taylor
Debbie Reynolds and her husband Eddie Fisher were Hollywood royalty—until Eddie left her for Elizabeth Taylor, Debbie's best friend. The ladies were so close that when Elizabeth married her third husband, Mike Todd, Debbie was the matron of honor, and Eddie was the best man...
Everything changed when Mike died in a plane crash. Both Debbie and Eddie comforted Elizabeth, but Eddie took it a step too far. He left Debbie for Elizabeth, and the pair married within a year of Mike's death. They divorced after only five years of marriage.