Even with a girl who looks great with or without makeup and professional photography, there comes a moment with every guy when she ceases to be "a phantom of delight/ when first she gleaned upon my sight" as per the opening line of the Wordsworth poem, and becomes that thing a few lines down, "but now I see her with human breath/ a traveler between life and death..."
Even if you had a Playmate of the Decade type girlfriend, after a while of putting up with her crap, she loses that glow of erotic perfection that was your initial infatuation. Eventually, you have to tolerate another imperfect human being in your midst, and stop chasing the goddess who isn't there.