Is it possible to find a woman who's pretty without her having an oversized ego as a result?

I have only two requirements when it comes to potential g/f's...must be (a) attractive - to me, anyway and (b) kind-hearted/warm. i don't give a damn about background, social status, blah blah...Unfortunately in all my years i've never found these two characteristics (looks and sincerity!) to genuinely co-exist. I have gone out with a number of pretty brunettes, two of whom i lived with for four years each, and both of whom i subsequently discovered were cheating on me. Guys flirted with them more and hence: ego - arrogance - unfaithfulness. I am now 28 and am somewhat dismayed that i have never experienced what i call 'two-way love' i.e her feelings genuinely matching mine. So many gals i see and meet just seem driven by material notions, and the urge to 'fit in' with how they perceive others are and 'supposed' to be. Idealism and warmth seem in very short supply and insincerity seems rampant...any ideas? i would much appreciate your insights. Thank you. (www.myspace.com/turbotempo)