We can even make assumptions about someone's personality, or even what they could be thinking based on the way that they make eye contact with us. Here are 5 interesting results:

Staring directly into someone’s eyes causes an arousal reaction. How that arousal is interpreted, however, depends on the parties involved and the circumstances. Being stared at by a stranger who appears large or ominous can be seen as a threat and elicit a fear response. This is common in social animals. A direct stare from a human to a dog or an ape can be interpreted as a threat from the large (and strange) human.

1. If someone is sexually attracted to you

Everyone assumes that a liar won’t look you in the eye, but <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0156615">research on the nonverbal cues </a>associated with deception suggests that a liar engages in more eye contact than a truth-teller. The explanation is that the deceiver goes the extra mile to try to convince you of his or her veracity and so “overdoes” the eye contact in order to appear truthful.

5. If someone is lying

Eye contact has also been found to be <a href="http://www.sciencedirect.com/science/article/abs/pii/S0887618508000972">somewhat linked to social anxiety </a>. However, the gaze of a <a href="https://www.yourtango.com/200937082/are-your-astrology-signs-sexually-compatible">potential sexual partner </a>causes arousal that can be interpreted positively — as a sexual invitation or a clear sign of interest.

Psychologist Paul Ekman has distinguished between <a href="https://www.psychologytoday.com/us/blog/thriving101/201001/what-science-has-say-about-genuine-vs-fake-smiles">smiles that represent genuine happiness </a> (“Duchenne” smiles), and fake smiles that might be used to feign happiness, or cover some other emotion. The key to <a href="https://www.yourtango.com/2018310955/4-biggest-communication-mistakes-we-make-when-reading-body-language">telling a fake smile from a real one </a>is in the eyes. When <a href="https://www.yourtango.com/love/how-to-make-a-girl-smile">forming real smiles, </a>the eyes narrow and create lines, or “crow’s feet,” at the outer corners.

2. If a smile is real or not

Research on <a href="https://www.psychologytoday.com/us/blog/the-attraction-doctor/201503/loving-eye-contact-how-mutual-staring-can-create-passion">love and attraction has found </a>that a mutual gaze — <a href="https://www.yourtango.com/2018314040/how-get-high-through-eye-contact-according-study">staring into each other’s eyes </a>— is a good predictor of two individuals being “in love.” Eye contact could be a very important part of dating. The research discovered that even those who <a href="https://www.yourtango.com/love/4-secrets-happiest-married-couples-know">were already a couple </a>found that when they continued to <a href="https://www.yourtango.com/experts/teresa-maples/how-eye-contact-improves-marriage">have eye contact with their partner </a>, they had a greater affection and feeling of passionate love between them.

4. If you're in love

There has been considerable research on how body language, particularly <a href="https://www.bbc.com/future/article/20190108-why-meeting-anothers-gaze-is-so-powerful">those coming from eye contact </a>, affects our behavior. It's actually quite astounding just how powerful eye contact can be.  Eye contact is so important that science has actually been studying it for many years and they continue to find out more about just how powerful it is. The eyes can give away so much and when we make eye contact with someone, it can have an impact on how we view that person.

When we are interested in something or someone, our pupils will dilate. Some <a href="https://health.howstuffworks.com/relationships/love/love-make-pupils-dilate.htm">research has even found </a>that men rate a woman who has larger pupils as more attractive than women with fuller irises.

3. If someone is interested in you

5 Things You Can Learn About Someone Just By Looking Them In The Eye

When You Want To Get To Know Someone, Making Eye Contact And Reading Their Body Language Can Do Wonders. And In This Case, There Are A Few Ways You Can Determine How Someone Feels.