Some women, especially particularly confident or assertive ones, will give what's known as the “elevator gaze”; looking up and down your entire length. It's a blatant “sizing you up” look and getting it is a sign that she likes what she sees.
Definition of 'look sb up and down'
If someone looks you up and down, they direct their eyes from your head to your feet, in a rude and superior way and often as though they disapprove of you.
We, females openly do that all the time. It could be anything: she might think you're attractive/pretty and she can't help herself, you might have a nice figure and she's envious of you, or you're wearing something nice catching her eyes and she wants to know what it is and checking out your style.
In most cases, this is a good sign of attraction as she might find you handsome, flirt with you, and wants you to know she appreciates you. When a girl stares at you she's often impressed with the way you look and is sort of checking you out.
If she engages back, teasing and joking with you, there is a good chance she thinks you're cute. Note, however, that some people are shy and don't show their affection this way. If she doesn't joke or tease back, but still smiles and seems interested, she might still think you're cute.
If she's giving you a friendly look or watching you do something fun, staring might be a sign that she wants to be friends. If she's gazing deep into your eyes while smiling and/or initiating touch, she may have a crush on you. If she's glaring at you, she could be mad at you or someone else in her life.
If a girl avoids eye contact with you, it can indicate that she's interested in you or not. Also, it might mean that she avoids eye contact generally with people or doesn't want a conversation with you. Regardless of the reason, checking her body language and talking to her might tell you why she avoids eye contact.
It's a definite sign of lust. When a guy looks you up and down, most likely he's checking out your figure. Some women don't appreciate this, and some guys definitely overdo it. But if it's a guy you're into and you want him to like you back, this is a good start.
Watch for Their Eye Gaze
Like touch, eye contact triggers the release of oxytocin. When someone is attracted to you, they subconsciously will try engaging in lots of mutual eye contact. They do this to feel closer to you, and because they are interested in you and what you are saying.
Glancing upwards often suggests that a person is bored. It may mean that they are looking at their surroundings to find something that stimulates them more than the conversation they are currently having.
Body language studies claim that a person who breaks eye contact with you by looking down is intimidated (i.e., attracted) and a person who breaks eye contact by looking to the side is indifferent (i.e., not attracted).
Emotional attraction is all about how you make another person FEEL. It can be triggered in a variety of ways: through touch, pheromones, body language, behavior, the tone of your voice, humor, confidence, and vulnerability. (Vulnerability is a really big one.)
Can you feel when someone is attracted to you? Yes. When someone feels you are an attractive person, some things come up between you that aren't there otherwise. The clues aren't always obvious, but you can see some of them by paying attention.
So, if you want to know if you are truly attractive, take a close look at both your physical appearance and your personality traits. Chances are that if you are confident and kind and use positive body language, like maintaining good eye contact and posture, others will find attractive qualities in you.
Women are attracted to confident men, and the key to alluding to your confidence is how you stand. Keeping your feet shoulder-width apart and locking back your shoulders will indicate that you have both strength and confidence. Next, keep your chin up and leave your arms by your sides.
Things You Should Know. Catching her staring at you is the biggest sign she has a crush. Look for other telltale cues like blushing, giggling, or making excuses to be together. Listen carefully to what she says—if she asks you about your crushes or talks about how she wants a boyfriend, she's dropping you some hints.
“Eye contact is an intimate and vulnerable act, so intense eye contact can be very meaningful,” says Fraley. “Deep eye contact, or holding your gaze for at least four seconds, may indicate feelings of love.” Bonus points if they smile in your presence too.