went to Rome Share definition Flag A saying used to describe a person who cheated on their significant other. The said person, 'went to Rome'. TAYLOR: Hey Peet, why aren't your parents together anymore? PEET: Because my mom went to Rome. went to Rome by caitlin Perry January 9, 2009 0 0 Get merch Get the went to Rome mug. Buy Now — $32.95 See more merch