why do partners lie?

salam..hello..so its about relationships again..i noe im not da kinda of person to talk bout dis..since all of mine was nver successful..so here are some lessons i learned from my previous ones..

couples due argue even when they think dat theyre totally sync in all matters..yeah..its all look so full of wonders in da begining but sooner or later u will hav to argue on something..

whether u like it or not..its a human nature..its the law of venus n mars..*if u read 'men are from mars, women are from venus' *

and lying was one of da causes..so y do people lie?y do hav to keep away from the truth?people always blame the liars and think that they're not da trustworthy partner nomore when they found outdat theirs partner was lying..so lets get a lil 'out-of-box' opinion on dis..