all's fair in love and war

The phrase "all's fair in love and war" is an idiom that suggests there are no rules or limits when it comes to matters of love and warfare. It implies that people are justified in using any means necessary to succeed or achieve their goals, even if it involves deception, manipulation, or unconventional tactics. The phrase acknowledges that love and war are both intense, unpredictable, and sometimes ruthless endeavors where moral or ethical considerations may be set aside in pursuit of victory or happiness.