No, it's actually pretty simple in my opinion. Sexual attraction is defined by 'a boner' or 'getting wet' by the mere sight of someone. If someone doesn't, and is perhaps, unable to expeirence that, they are definetely not tradionally sexual. An asexual is someone who has the possibilityof becoming sexually aroused but they can never direct it at anyone in particular. A demisexual may seem like an asexual if they have never been in a relationship, but their defining moment is that once in a relationship with a person and once it has given enough time for an emotional bond to form, they become sexually aroused by the sight of their partner.