All’s fair in love and war?

Strange as it is I never thought along the path "all’s fair in love and war". Ok, lets hack into this:

1. "The rules of fair play do not apply in love"?
I personally find in love one must be even more considerate, noble and kind, for if one's willing to go to ANY lenghts to GET their beloved, that is not love, not even close. That, my friend, is lust, ego - call it whatever you want, but it has nothing to do with love in its true, pure sense. If and when you truly love you put the interest and happiness of the beloved first, even if this means excruciating pain or even death to you. Because true love is selfless and unconditional. When faced with the question "why do you love him/her?" true lover is puzzled for he/she loves not FOR something but rather INSTEAD of faults, shortcomings and mistakes of their beloved. And once you really love you accept the other person for what he/she is. And you respect him/her, and trust.
I think when one's blessed with that rare gift of unsurpassing love one rises beyond boundaries of self and ego, becoming a better version of him/her-self in every discribable way forever yearning for perfection. Intrigue, rivalry and deceit are abhorrent to true lover's nature.

2. Talking of war.
I think same is very true here - in war one must make room for kindness, generosity and selflessness. One must be noble even when the circumstances might call for savagery. For there's innocent life everywhere. Life is sacred. I stress I'm talking of the lives of the innocent, not those willingly involved in warfare, for once you choose to fallow the path of war you choose to abide by its ugly rules of "kill or be killed" etc. And of course if one's up to defend their freedom, family and home have to sacrifice some of their pacifist principles. But none of this justifies savagery in any case.

And one must always think, think before treading on a life flame of another.
And tread lightly on another's ground.

I wonder, if more people were truly in love would there even be war in the world?