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The 👋 emoji in texting is a friendly, casual greeting - like a virtual wave. From a friend or acquaintance, it's a simple "hey" or "bye." But from a romantic interest, it can be a flirty way to get your attention, especially if paired with a 😉 or 😏. Used repeatedly, it can convey enthusiasm or neediness. Overall, it's a low-stakes, versatile emoji that works in most contexts.