Con artist and Two-timer

Con artist noun - A swindler who exploits the confidence of his victim.

Two-timer and con artist are semantically related In some cases you can use "Two-timer" instead a noun phrase "Con artist".

Two-timer noun - Someone who deceives a lover or spouse by carrying on a sexual relationship with somebody else.

Con artist and two-timer are semantically related in hypocrite topic. Sometimes you can use "Con artist" instead a noun phrase "Two-timer", if it concerns topics such as is deceitful.