two-timing
- v carry on a romantic relationship with two people at the same time
- s not faithful to a spouse or lover
a two-timing boyfriend
- Last week the Frankie of the song popped up larger than life and blacker than Johnnie's two-timing heart.
- He will lead into Streetcorner Hustler's Blues, for example, by telling of a two-timing hippie who pleads with his knife-wielding wife to take his white-on-white Cadillac .
- While their appearance brings the modern works into a historical context, it's remarkable how "Abie the Agent," a story about a Jewish jeweler and his two-timing wife, trumps all .