Learn what "how could i be so blind" means, when people say it, and how to use it naturally in English.

This means the speaker feels foolish or regretful for missing something obvious.
From Billionaire Daughter’S Love Triangle, Episode 54
The speaker criticizes themselves for not seeing an obvious truth sooner.
Use it when you realize you overlooked an important clue. It is common in emotional speech and inner reflection.
Scenes unlock real expressions as you watch
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