Anyway, going back to INTP flirting.
Emo affair is something hard to define. It's a kinda contemporary concept, often times overlooked. Heck, even the people involved in this may not even know that they're into one because we often define cheating in the context of sexual relationship.
But, I'm willing to bet that an INTP can pull off an emo affair with a better deal of proficiency than being that social person in wide groups. It's too hard for an INTP to pull off the latter.
Like I said earlier, what we INTPs lack in proficiency in large group dynamics, we make it up though forging closer ties. Women, being the more socially proficient gender, would be the default choice for that.
I define my social life in that set-up, good thing that my girlfriend understands though others can sometimes find it unconventional.