Keeping it 100; why lies & relationships just don't go together...

I hear a lot of folk touting how grown they are but can't tell the truth to the people they meet. First impressions are usually THE opportunity to start with a clean slate, why begin with a falsehood? Have you ever fudged or flat out lied to get in another's persons pants or space? Is it even necessary? How common is it for people to tell partners or potential partners the truth. Who's fooling who, on the next Ms. Kitty!