A type of smile that belongs to a member of a Korean group called Loona, who's name is Yves or Ha Sooyoung. It's a smile that can make you fall in love with her instantly
Person A: who's that? Her smile is beautiful
Person B: Right? That's Yves! She has a first love smile
Person B: Right? That's Yves! She has a first love smile
by Loonathewierdchaoticgays November 12, 2021
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