Originally Posted by The False Prophet
I don't think it's a confusion of emotions and aesthetics if one finds someone more attractive due to affection. Often this will encompass the little mannerisms and curiosities that make someone human, rather than a picture on a magazine page. It's for this reason that I'm typically not attracted to models, movie stars, etc. To the extent that I am attracted to the latter, it will be at least in part influenced by their performance in a particular role.
Context is everything. A gorgeous pair of shoes with a rubbish suit won't look as good as a wearing both in the middle of the range. And great cheekbones and perfect skin with a terrible personality will look icy and alien; someone far less sculpted but charming will seem warm and inviting.
Finally, I'm not sure that taste in women (or men) derives from an inbuild set of preferences. Certainly mine has changed a lot over time. In particular, after a bad breakup, for example, I'll be put off girls of similar appearance. I met a really cute girl at a party who clearly liked me not so far back, but she had exactly the same haircut as my ex, and was about the same height and build. It just freaked me out.
I saw her more recently, totally different haircut, much much better!
Interesting. One measure researchers sometimes rate as a component of attractiveness is facial expressiveness. "Great cheekbones and perfect skin" without a smile can often be low in expressiveness ("icy"). Strictly speaking, it probably doesn't affect sexual attraction much, but it can strongly affect how people relate to each other. Hence, the popularity of teeth whitening, especially among the sex that is more likely to take the passive role in approaches. Hairstyle and clothing (especially color) also can make someone look more inviting, but close up facial expression matters more, obviously.