Watch Out! We've Got Some Science Over Here!

The problem is you're dating the wrong kind of anime girl. Forget the bipolar "Tsundere" girls (even though they're the best, <3 Eri Sawachika). Don't settle for the charming genki girl either (their shtick gets old fast). And never ever go for the bubbly airhead. Nuff said.

If you want the least complicated anime girl to date, just get the "Yamato Nadeshiko" girl, or even the so-called doormat like, say Aoi Sakuraba from Ai Yori Aoshi. Sure they are boring as heck, but they make up for it with total un-complication. (Yeah I'm a chauvinist. That's what watching too much harem anime for more than 20 years will do to you.)

I don't know--none of these are real deal-breakers. It's best for otaku not to be too picky when choosing a waifu.