I think it all has to do with the way you were nurtured when you were young. it was all inbred into your pscyche...... and Im sure DNA has a few things to do with it as well. it is said that men usually look for a woman that reminds them of their mother, and women usually look for a man that reminds them of their father.
we're attracted to our imago~it's a compilation of traits from both of our parental units. harville talks about it.
Could you explain what an imago is, please? I Googled it but I only got hits about marriage counselling, nothing about attraction or parentel traits.