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Nothing is out of bounds when it comes to love and war. The rules of hard play are acceptable in war. In someones eye's "all is fair in love and war" in other words, in a war between love and hate, anything is acceptable or fair.

The only two areas of life in which you can be forgiven for doing anything are love and war. For example, if someone kills one of their relatives on the battlefield, it is more acceptable than murder usually. Similarly, stealing a friend's lover is seen as more acceptable if you love them, instead of say, just wanting them for money.
by vivianVORTECKS August 22, 2010
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Something which complete assholes and bitches say to condone their douchebaggery behaviour. They have no problem resorting to devious tactics to get what they want, even if what they do harms other people . The same people are likely to also use the phrase 'it's a dog eat dog world'. They believe that behaviour which is deceitful or not fair is acceptable during an argument or competition. They must win at any cost.
In order to go on a date with me, I'll trick her into believing that her boyfriend is seeing another woman.

Did you tell her lies about her boyfriend so she would hate him and go out with you instead?
Of course! All is fair in love and war.
by Onealreal November 15, 2016
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