english
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general::
Phrase(s): Where have you been all my life? Inf. an expression of admiration usually said to a lover. • Mary: I feel very happy when I’m with you. John: Oh, Mary, where have you been all my life? • John grasped her hand, stared directly at her left ear, and stuttered, "Where have you been all my life?"
McGrawhill's American Idioms And Phrasal Verbs