In case anyone has sons that have not seen the hot/crazy matrix, it may be worth referring them to this video. It doesn't ensure they will make better choices but will make them aware of what they could encounter.Make no mistake, they are the masters of passive aggressiveness even in the slightest, barely perceptible forms. As far as mean streaks, ask anyone with an ex-wife when that streak really shines.
When my boys were teenagers (17-18) and started dating a few years after my divorce, I told them that one of the secrets to a good relationship was that 1) all women are nuts and 2) to find a woman whose particular type of nuttiness you could deal with.