Learn what "who is this" means, when people say it, and how to use it naturally in English.

This is a jealous accusation asking who the other man is and why the speaker is being betrayed.
From I'M Obsessed With My Boss Part I, Episode 37
The speaker confronts someone about another man and accuses them of cheating.
Use it only in relationship conflict or dramatic scenes. It sounds very emotional and accusatory.
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