They say opposites attract, and psychologists agree

There is also the theory that our naturalattraction to our opposites is a subconscious way of forcing us to deal withthe weaker aspects of our own nature.

Opposites Attract by Paula Abdul song meaning, lyric interpretation, video and chart position

So in a sense, our attractionto the opposite personality can be seen as our subconscious minds driving ustowards becoming a more complete individual,by causing us to face the areas in life which are most difficult to us.

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David Perrett, Professor at the School of Psychology and Neuroscience at St Andrews University in Scotland
Plastic surgery really doesn't count for much in the end. You could be with somebody who's aesthetically very beautiful but if they don't smile or react then that counts for much less. So we can change our faces by interacting with others and doing so in a pleasant manner, and that will aid our attractiveness and make others interested in us.