Sexual attraction, preference, choice or orientation?

People speak a lot about gender and choice...
It is my turn to write a script. 

You are attracted to XX or XY phenotypes and it is not a choice, it is the result of your brain-wiring id est a mix of genomics and hormone secretion at right time.  

Then you encounter in your early sexual life several XX or XY phenotypes and your feelings are those that you can remember when you meet people in a random mode. But I guess that you remember only a part of the palette of heterosexual or homosexual attractions you actually felt. 

Eventually, you will mate with one woman or man on mixed criteria, I mean more criteria depending on choices than on the attraction when you will live nearer with her or him when you will share the same environment.