Most Helpful Guy
Well if he treats you the way you want to be treated, is honest to you, and most of all respects what ever decision you suggest.. or at least is willing to have any open discussion with you about anything.. you may have found someone who is on the right track to be number one.. but still things could change down the road.. and he could maybe go from your number one.. to your number two
Most Helpful Girl
That you trust them and you're instantly just comfortable with them. They make you smile.