In my opinion it's the whole package, body and character. Everyone of us has preferences he identifies a beautiful perosn with, wihtout knowing the person, his/her outer appearance is the access gate to decide whether the person is interesting for me to know, or not! Ones you know a person, you make differentiations between knowing and admiring, once you got a picture of the character. Knowing is a kind of communication thing may be socializing, but starting to admire someone creates personal comittment and emotional aspects. When you identified all emotional aspects, you can divide between love, sympathy and other facettes.

I should have become a psycholigist when reading those lines! Wow, I am impressed by myself... and a bit scared...