Why do women love to show off their cleavage?

I feel so shy and my boobs feel so cold when wind or cold weather contact on my boobs. I can't let them exposed and I feel embarrassed to show my cleavages even when I'm around my boyfriend..
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+1 y
I don't feel comfortable when he smiles at my boobs. it's like my face is on my boobs
Why do women love to show off their cleavage?
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