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.
Making Eye Contact
If she looks at you and then instantly turns away, it may be because she is shy or doesn't want to get caught looking at you. If she looks back at you and smiles, that's an invitation for you to go introduce yourself.
Making frequent eye contact with someone can be a sign of interest or attraction, but it's not always a clear indicator.
Most probably she likes you and is gauging your reaction as you walk past her :) She's trying to find out if you reciprocate her interest. But try talk to her just to make sure you're on the right track and she's not just weird.
You may notice her glaring at you without a trace of a smile on her face, which implies she's upset or annoyed at you in some way. Other signs that she's upset include giving you the silent treatment or speaking sarcastically (and sometimes with deliberate rudeness) when she does talk to you.
Some girls may like shy guys, while others may not, just as some women may prefer outgoing men to those who are more reserved. Moreover, some women may like certain shy men and dislike others, choosing to focus on a person as a whole rather than a small sliver of someone's personality.
If she's interested and forward, she'll be looking at you and will maintain eye contact when you lock eyes. She may smile or she may scan your face and give you a double-take. This is a pretty obvious sign that she likes you and she isn't afraid to show it, either.
He is asserting himself
Sometimes you may think he stares into my eyes without smiling. Staring might be him asserting his dominance. This type of eye contact may occur in public or at work and generally doesn't mean that someone is attracted to you. In some instances, it might even be a bit hostile.
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.
Actually, science has proven it so! Certain chemicals (or endorphins) that produce the emotion of love can be emitted through emotions expressed in the eyes. There are physiological changes in the eyes that occur when love is expressed between two individuals.
Yes. Eye contact is a great way to both create and gauge attraction. Prolonged eye contact can increase arousal if it is coming from a potential sexual partner. You can also tell if a smile is genuine through the eyes, which helps understand if someone is actually attracted to you.
Eye contact is a powerful stimulator of affection. A study published in the Journal of Research and Personality in which two opposite sex strangers were asked to gaze into each other's eyes for two minutes found that this was enough in some cases to produce passionate feelings for each other.
People often stare out of curiosity. We are all curious when we see something new or someone different. Although it can make us feel uncomfortable, people often do this by accident, without meaning to. Not everyone will have met or seen someone who has a visible difference before.
He's asserting dominance.
If he's looking at you intensely without smiling and even looks angry or stern, he could be trying to assert his dominance. In this case, his stare will feel like a challenge—in his mind, the weaker one won't be able to keep eye contact.
If you notice he is making more eye contact with you or you catch a guy staring at you, he is probably attracted to you. He may be enthralled by your good looks and may be fantasizing about kissing you. Perhaps he stares at you and smiles; that could mean he likes you, too.