That sounds so strange. My experience with ISTPs, even when being jackasses, rarely give a darn about make-up or clothes. And as to shaving her legs, boyfriend needs to be forced to try it sometime. Outside. In a snowpile.Hilariously enough, they almost broke up today and as it turns out, the ISTP is super controlling, going so far as to basically picking out her clothes for her, insisting that she wear makeup at all times and complaining when she doesn't shave her legs (Winter, in Brooklyn! She's allowed to not shave her legs once in a while!).
Is this an incredibly unhealthy example of some kind of ISTP behaviour or is this guy just a dick to his girlfriend? Do ISTPs find themselves being controlling (though I doubt any of you express it in ways as douchey as this!) to their SOs?
(I'm not accusing, I'm just curious!)
When an ISTP goes bad, it's mostly a mental/cerebral thing - like everyone becomes "stupid" or intolerable. Ti goes into overdrive, takes on superiority.
Not to aim hateration at ISTJs, but could he possibly be an unhealthy ISTJ? This-that, black-white, on-off, etc sounds pretty J to me.