JJust observe yourself when a person you admire walk pasts you, or is in direction-wise approaching you. Did you notice that sweet curve on your lips. Your cheeks would rush with fresh blood and all you would sit and do is blushing.
Observe yourself when a smart-looking guy asks you for a coffee or asks you to join him for lunch or breakfast even. Automatically your posture would become straight-up and you shoulders would straighten out, and your backbone would be as supportive as those glitters in your eyes. Now not only you people around would also notice that sweet little red change in you.