When someone has never been kissed before.

'someone who has not had the fine experience of someones facial feature of the lips touching another being's lips'

someone who has never been kissed/kissed someone

Someone who hasn't been kissed yet.

n. A person who has never been kissed before.
(term is usually reserved for use with a significant other eg. husband/wife/boyfriend/girlfriend)

someone who is me.

A new or poser smoker who wets the mouth piece of a cigarette filter/blunt, causing annoyance to the person who passed it to him.