Keep in mind that it works the other way, too: extreme attractiveness can also be a repellent for women. Especially if the guy has a big ego, is a player, etc. (not many nerds are, but some are). When it comes to relationships, most women I know of prefer loyalty over physical attractiveness, even if they say otherwise.
Of course, there is also the issue of persistence, which cannot be entirely discounted.
Of course, there is also the issue of persistence, which cannot be entirely discounted.