a person who is not attracted to a male or female...so basically will stay single for the rest of there lives and not feel the need 2 have sex with anything because there not attracted 2 anyone??
From what I've researched (I was confused for aaaaages so I did a lot,) if the person has absolutely no sexual attraction to anything/anyone (male/female/etc.,) they are generally labelled as asexual. There is nothing wrong with having no sexual attraction - the person may have emotional ties/bonds but just nothing else, which makes them asexual.
People who remain single and refrain from sexual activity are also called celibate, but if you're talking about a sexuality then it's asexual.
Hope I've helped!! ^^