A demisexual is a type of sexual identity where people do not feel or experience any type of sexual attraction toward their partner unless they form a certain strong emotional connection. This terminology comes from a sexual orientation that is in between sexual and asexual orientations. However, it does not mean that a demisexual has an incomplete or half sexuality. It simply means that without the emotional intimacy, there is no sexual attraction formed. Moreover, the level of intimacy varies from one person to another. It also does not mean that there is no sexuality without the emotional intimacy.
"Why does he insist on not having sex with you?"
"He says that we haven't clicked yet. He says he has to have an emotional connection."
"Oh, does he identify as a demisexual?"
"I guess so."