I'm amused that you get put off by attractive people, as it seems the case with your friend who is remarkably gorgeous, but whom you have no interest in.
Don't think yourself odd for thinking this way, we all wonder what life would be like if we were more handsome, intelligent, wiser, etc. By your description of your friend, you seem like you don't have a very high opinion of yourself, as you said, what is the point of existence next to such a beautiful creature (paraphrasing of course).
But remember this my friend, not all that glitters is gold and every rose has its thorns. Terribly cliche', but let me explain. "All that glitters is not gold" means that although physical attractive people may seem perfect because of their beauty, they are human beings and have their own problems. They even might feel the unrelenting pressure of trying to please others because they feel their beauty needs to be complimented.
As for "every rose has its thorns", beautiful people are not perfect, as I already stated, but also because they are attractive, they might be haughty and arrogant about how they look. In the same manner a rose is beautiful but can prick you with its thorn, beautiful people (physically speaking) may seem beautiful, but they can possibly arrogant, foolish, and impulsive. I think this is true of a lot (not all) of naturally attractive people, because they think they are beautiful, they think they are superior over others. What foolish arrogance, beauty dies with age, but intelligence, kindness, and respect are immortal.
A beautiful girl without manners, respect, kindness, intelligence, or morality is about as useless as a winter coat in Hell. This is my personal belief. I don't know what your friend is like, but remember that YOU have natural gifts as well, whether it be humor, wisdom, intelligence, charisma, talent, or the numerous other things I could go on with. Beauty dies.