What is your preferred pet name to be called by your partner in a relationship, and what is your favorite to use for them?

By pet name I mean names like Sweetie, Hun, Babe, stuff like that. Which are your favorites to hear and to use? If you don't like pet names, then let me know why you hate them.
What is your preferred pet name to be called by your partner in a relationship, and what is your favorite to use for them?
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