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Phrase(s): I’ve heard so much about you.
a polite phrase said upon being introduced to someone you have heard about from a friend or the person’s relatives. • Bill: This is my cousin Kate. Bob: Hello, Kate. I’ve heard so much about you. • Sue: Hello, Bill. I’ve heard so much about you. Bill: Hello. Glad to meet you.
McGrawhill's American Idioms And Phrasal Verbs