(unfaithful) not true to duty or obligation or promises; "an unfaithful lover"
(unfaithful) having sexual relations with someone other than your husband or wife, or your boyfriend or girlfriend; "her husband was unfaithful"
(unfaithful) faithless: having the character of, or characteristic of, a traitor; "the faithless Benedict Arnold"; "a lying traitorous insurrectionist"
Adultery (also called philandery) is a form of extramarital sex. It is sexual infidelity to ones spouse. It originally referred only to sex between a woman who was married and a person other than her spouse.
(Unfaithful (film)) Unfaithful is a 2002 American erotic drama film directed by Adrian Lyne and stars Richard Gere, Diane Lane and Olivier Martinez. It was adapted by Alvin Sargent and William Broyles Jr. from the French film The Unfaithful Wife (La Femme infidèle) by Claude Chabrol. ...
(Unfaithful (House)) The fifth season of House premiered September 16, 2008 and ended May 11, 2009. It began to air in a new time slot from September to December: Tuesday 8/7c. Starting January 19, 2009, House moved to Mondays at 8/7c. ...
(Unfaithful (song)) "Unfaithful" is a pop ballad written by Ne-Yo, Tor Erik Hermansen and Mikkel S. Eriksen for R&B singer Rihanna's second album, A Girl like Me. It was produced by Stargate and released as the album's second single in mid-2006.