What Does "you're supposed to be my sister" Mean?
Learn what "you're supposed to be my sister" means, when people say it, and how to use it naturally in English.
You're supposed to be my sister.
It means the speaker is upset because a sister is expected to act loyally and not betray them.
From My Sister Stole My Man, Episode 41
When do people say this?
Scene Context
The speaker is reminding someone of their family role and expected loyalty.
Usage Scenario
Use this in family conflict when expressing disappointment or betrayal. It sounds emotional and accusatory, so it can be harsh.
Better ways to say it
You're supposed to be on my side.
You're my sister, remember?
You're supposed to act like my sister.
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