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.
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".
I don't buy the schmegegge about Morty sleeping with Moira.
His version of the story was pure schmegegge.
The whole schmegegge was made up to get Liz a little bit of attention.