There was an interesting experiment done with speed dating. In round 1 people were asked to come sit at a person's table for a minute, don't say anything. They were being rated as to how likely the other would want to go on a date with them. In a round 2, they would sit and talk for 5 minutes about themselves and then get rated. Ratings from round 1 and round 2 were almost identical, i.e. personality did not matter. In women the critical aspect that made them attractive was hip to waist ratio, in men height. Quite pathetic.

That's how attraction works. But that is NOT how relationships work.