A person who is so incredibly lovely that (a) words can't express their loveliness (b) they can't possibly be anymore lovely because they are filled with loveliness. Therefore they are LOVIEFUL.
*note: in this case lovely is the word which encompasses all the wonderful qualities in a person e.g. beautiful, attractive, enchanting, sexy, gorgeous, ravishing, glamourous, stunning, exquisite, adorable (to name a few :)).
*note 2: suitable for children between the ages 0-16. may blind their eyesight due to the free flowing expression of loveliness :)
You are so perfect you are completely loveliful :)