sometimes I wonder......

sometimes I wonder if it could be possible to find a person who doesnt lie or even be true in a relationship......Its proven that rarely any realationship is build up of trust and sincereity.I would for once want to have a relationship with a person who is truthful and isnt with so many people at once. I know it is impossible to find that its like 1/100 chance, thats why you never know the person right because they're never 100% truthful.So that is my question is any one in this world sincere and truthful?