If his eyes don’t “sparkle,” see if he gives you a “look” he doesn’t give anyone else. For example, he might raise his eyebrows or stare really intensely at you. [2] X Research source

Some guys are less confident than others! He might not open up his body, and instead be more fidgety. [4] X Research source If he’s a nervous person, check to see if he plays with his hair a lot, or constantly crosses and uncrosses his legs.

The same goes for facial expressions. Does he smile when you smile? Frown when you frown?[6] X Research source Try telling him a story with a lot of emotion and see how he reacts while listening.

Some people show this in subtler ways than others. Remember: not everyone is super confident! For example, he might have difficulty pulling away from a hug, or sit on the same side of a table as you. If he touches your back or holds your hand, he’s probably super interested. [8] X Research source

Teasing should be fun for both of you, and never actually be mean!

The content of “flirting” can look different for different people. For example, some guys might speak intimately with you, while others might just want to make you smile. Some might love laughing at your jokes that even you don’t think are that funny![11] X Research source

Generally speaking, these expressions are happy and excited. For example, he might smile a lot, raise his eyebrows, or talk loudly. The guy pays a lot of attention to every detail and makes sure that you’re feeling happy with him? That’s a great chemistry sign!

For example, he might use the same slang as you, or speak at a similar volume or speed.

Listen closely for personable language versus detached language. For example, “our” versus “the” in reference to plans.

This is especially significant for guys, since they tend to be less expressive with people they don’t feel close to after childhood. [16] X Research source Bonus points if you see a big toothy grin, or he smiles so big that it crinkles up his whole face.

Being nervous around each other is different from being uncomfortable. In other words, you should still feel excited about seeing each other!

Tension can also make people nervous, so give each other some space if you need it. On the other hand, tension can make people eager to act! Do what feels right for both of you. Once you feel comfortable enough around each other, you can try having a conversation about your desires and expectations.

One way this shows up is by feeling comfortable with silences in conversations. Remember that even though it may not feel like it, there’s still an outside world to attend to!