Sex is driven by one's animalistic nature and has little to do with cognition; many might relate to that regretful one-night stand. I've had my most intense sexual experiences with an ESI but I've had my worst with another ESI. Given equal physical attraction (the primary catalyst), sex seemed to be best with couples who have the lesser combined-amounts of baggage, which promotes confidence to let the animals out - and that's not type related......
a.k.a. I/O