Bæ/bae is a Danish word for poop. Also used by people on the internet who think it means baby, sweetie etc.
Bae didn't tell you anything, last I checked pooped don't talk
Word used by ghetto people to address their significant other because they have found themselves too lazy to pronounce the entire word "babe".
English
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BAE is an acronym for Before Anyone Else You can't use a words definition for an acronym because you would have to define every word, and that is pointless.