Sex and love are two completely seperate things and you can have great sex with someone you can't stand the sight of really if you are into shallow pleasure seeking which is clearly what your freind is wanting. You, on the other hand, are after a proper deeper relationship and she's not going to fit the bill by the sounds of it as she wants something uncomplicated and more detached. Find someone else, you deserve to be involved in a relationship that's fulfilling to you on the level you need and you might hit really lucky and find someone that you are in love with, is in love with you and is great in bed too, they do exist:)