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

It means the speaker is joking that the other person is kinder or more emotionally sensitive than expected.
From Collateral Hearts, Episode 58
Someone is teasing another person for being unexpectedly kind or sentimental.
Use this with friends or someone close when teasing them affectionately. It can sound sarcastic if the tone is dry, so avoid it in formal situations.
Scenes unlock real expressions as you watch
Tap to translate or use dual subtitles
Practice immediately with AI Characters
Reinforce with quick quizzes and repetition
Build speaking confidence with drama-based context, instant explanations, and AI-powered practice tailored to real conversations.
Start learning