Do you believe in blind trust in a serious relationship & marriage i. e. you don't need to know each other's passwords, where they at constantly etc?

Do you believe in blind trust in a serious relationship & marriage i. e. you dont need to know each others passwords, where they at constantly etc?
Do you believe in blind trust in a serious relationship & marriage i. e. you don't need to know each other's passwords, where they at constantly etc?
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