Extremely simple question

[eurotrash]

Hi guys, very simple question I'm sure most everyone here will know.

I know that polar molecules are attracted to each other, but are nonpolar molecules attracted to other nonpolar molecules? Or is there a greater attraction, or affinity, between nonpolar-nonpolar than between polar-nonpolar?
Or at least, is there less repulsion between nonpolar-nonpolar than between polar-nonpolar?

Thanks