The only known "sweeterheart" to date is M** M******z who's beauty passes actors and models. A sweeterheart is a person who can't be given such a simple compliment like "sweetheart", they need to be given a more cute, meaningful compliment like sweeterheart. Only the most prestigious people can be called a sweeterheart.
She was a sweeterheart.
by Radarfied December 20, 2014