a person who is loved very much

sweetheart, favorite person

of 1; a single (person, thing etc); the same

individual

the one, single, example; and no other; and nothing else or more; but it must me added that; (used to introduce a condition or reason)

singular

one and only; belonging to one person, company etc; lower surface of a human foot, or of a sock, shoe etc

alone, singular

being the only one of its kind or standard

alone, singular