Most probably the Greek phrase is "Μανάρι μου".
Μανάρι translates to young sheep or goat.
"μου" means "my".
However the phrase "Μανάρι μου!" is used, metaphorically speaking, when someone expresses his admiration to a beautiful woman.
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Vasiliki Baskou, Instructor/Director, https://learn-greek-online.com.