I basically believe looks attract the opposite sex (or sometimes the same sex), but in the long run looks alone won't make a relationship. If you meet a beautiful girl and nothing else is there in the way of personality, interests, intelligence, etc. who cares.
Looks are fairly vital in guys approaching you in the first place but one they get to know you (and this may sound like a cliché), the value of looks start to fade and other factors like personality come into the equation.
Not very to me. I mean obviously I need to be attracted to the girl, but looks fade and love grows. Sex is very important in a relationship. A healthy sex life is crucial.