From a more religious point of view, I believe that you actually have grounds for divorce. Now if you were staying for the children, I could understand this (i am doing so). But why would you actually want to continue a relationship with someone that will probably never find you attractive? I just saw this in the paper over the weekend in an advice column. A man and woman are "Deeply" in love, were planning on getting married, but yet the man admitted that the women has no interest in sex and is not attreacted to him physically. He asked if they should get counselling. The advisor responded with "You should get counselling. Why would a man KNOWINGLY want to marry a woman that is not physically attracted to him".
So I ask the question, if it is not for the kids, why do you WANT to spend the rest of your life with someone that admits will never be attracted to you?