What do you do subconsciously that makes you realize you’re attracted to someone? Like before you become aware of the fact that you might really?

What do you do subconsciously that makes you realize you’re attracted to someone?

Like before you become aware of the fact that you might really be into someone, what are some things you have caught yourself doing that leads you to this conclusion?
What do you do subconsciously that makes you realize you’re attracted to someone? Like before you become aware of the fact that you might really?
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