And when it comes to having a crush, they’re right.

That's awkward.

Hey love bugs, I'm Trace.

When you’re looking at someone you like, I mean, like like, your body actually changes in a variety of ways.

And one of the things that happens is you go all googly-eyed.

No really, your pupils dilate.

Your pupil size is controlled by your autonomic nervous system,

which regulates all of your involuntary actions like breathing, heart rate, and sweating.

A branch of this system called the sympathetic nervous system, or SNS,

is responsible for your body’s fight or flight mechanism.

This mechanism acts up when you’re under stress, like when you’re talking to your crush,

and releases the hormone noradrenaline, causing your pupils to dilate.

This same hormone also causes you to sweat more and your heart to beat faster around someone you like.

And having dilated pupils might actually serve a purpose.

Another study published in 2004 in Evolution and Human Behavior supported these findings

and also showed that women were more attracted to men with medium or large sized pupils.

Even as far back as 500 years ago in Italy, women trying to attract men would put the

extract of the belladonna plant into their eyes to dilate their pupils.

Today, we just use photoshop.

Another sign of attraction is that flushed look on your face anytime you get up the courage to talk to someone you like.

Blushing is also a result of your SNS, which causes the blood vessels in your face to dilate,

increasing blood flow and giving you rosy red cheeks.

It’s more common in women than men, and although there are a few theories as to why this happens,

scientists still aren’t clear on the purpose of blushing.

But even if you aren’t the blushing type,

your crush might still be able to tell that you like them when you speak to them.

There have been numerous studies done on what happens to your voice when you are attracted to someone

and they all seem to agree that your voice changes,

but they don't necessarily agree on how.

According to a 2014 study published in Evolution and Human Behavior,

males speak in a more melodic fashion when they are talking with someone they like almost the way you might speak to a baby,

and also they deepen their voice.

Another study published in Nonverbal Behavior supports this,

noting that both sexes had lower pitched voices when they were talking to someone they found attractive.

“Excuse me, young lady, you’re looking awfully nice tonight!”.

Maybe I should work on that.

In both those studies, participants looked at potential partners that they found attractive.

But a study done on people in relationships had different results.

Research published in the Journal of Nonverbal Behavior took people in new relationships

and had strangers listen in on their conversations.

The strangers had to guess if the subjects were talking to platonic friends or romantic partners.

Listeners noted that the tones people used with their partners were, quote,

“more pleasant, sexier, and reflecting greater romantic interest”.

They also found that males and females both changed their voice to closely match or mimic the other's tone.

Males spoke with a higher pitch, while ladies deepened their voices.

It’s almost as if they were trying to come together in harmony and make sweet, sweet beautiful music.

So obviously, more research is needed to tell exactly how and why your voice changes when you're talking to your crush.

Just remember that even if you’re trying to play it cool, you’re still giving off physical cues that you're one smitten kitten.

And if things get serious, remember for 100 years every kiss begins with Kay.

Once you and your crush have finally gotten past the awkward beginnings,

you might be ready for some cuddle bug time.

Check out this video to find out how spooning is good for your health.

How do you guys react when you see your crush?

Let us know in the comments, make sure you subscribe for more DNews and thanks for watching.