1 definition by Dear Petunia
Someone who cheats, commits adultery or two-times in a relationship. In short they have affairs with one or more people.
Person 1: "Did you guys hear about Henry?"
Person 2: "Yeah he's totally two-timing Shannon with Mary!"
Person 3: "Jeez Henry is such a love rat!"
Person 2: "Yeah he's totally two-timing Shannon with Mary!"
Person 3: "Jeez Henry is such a love rat!"
by Dear Petunia April 3, 2010