All's fair when love is war.

Other lines from this film

• Sharon and Derek have all they've ever wanted... but someone else wants it more.featured
• On April 24th, watch your back.promo
• This spring, beware the obsessed.promo
• How Far Would You Go To Protect What's Yours?
• If Someone Wanted Your Husband, If They Threatened Your Family, How Far Would You Go To Protect What's Yours?
• Beware the obsession. Resist the obsession. Escape the obsession.
• An office flirtation. An innocent temptation. Two different perceptions.
• What you hide makes you innocent. What you reveal makes you guilty. And the truth lies somewhere in between.

This wording in other films

One line, 2 films.

• Rushmore (1998)

Similar meaning

Lines whose meaning sits closest, by embedding similarity.

Same sentence pattern

Shape: all 's … when … is …