unfaithful

During the trial, Holly has been portrayed by him to be a nasty, unfaithful girlfriend who had multiple boyfriends, this could not be further from the truth.

Stewart said the act was “neither naughty nor unfaithful.”

The word has sexual connotations, too, meaning a man whose female partner is unfaithful.

They divorced after he admitted to being unfaithful during the marriage.

The construction worker was filmed tearfully pleading: "I swear to God, I am being so straight... I have not been unfaithful to her."