Learn what "i don't know what came over me" means, when people say it, and how to use it naturally in English.

This means the speaker acted out of character and cannot fully explain their behavior.
From The Dumb Billionaire Heiress In Love Part I, Episode 32
The speaker apologetically says they do not understand why they acted that way.
Use it after doing something impulsive, rude, or surprising. It is common in apologies or self-explanations.
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