>> Sexual people ultimately want sex, and can’t really conceive that a relationship could exist without it. <<

True, but most of them do have relationships that aren't sexual. They had parents; they may have siblings or children; and most folks have at least a few friends who are in a sexually irrelevant category. If you say that you are looking for friendships, or you think of someone as a brother/sister, they can usually wrap their mind around what such a relationship is -- even if they don't understand why you don't want to screw everything that moves.