Do you mean that pleasant feeling when you meet someone you have never seen before and you feel an immediate "click" ?! This can happen during a party, at work, on a first date or on the street through common people. When one shows his feelings towards partners and describes it by saying that we simply "climbed", others are skeptical of this phenomenon. Is it possible for this to happen in the first meeting?

Well, recent studies have shown that when people respond quickly to each other in conversations and feel that communication "flows" they have felt the famous "click" that is often mentioned. Having said that, maybe people should not be too skeptical about conversations or first impressions. Experts say that if you feel you can finish each other's sentences, it's probably because you just "stuck". 

When people have similar behaviors, belief systems, and interests, they can more easily engage in dialogue and communication flows naturally. Therefore, a good first impression and a successful first date is an important factor for the continuity of the acquaintance. That "click" you say you feel with someone exists and is real! 

Therefore, the next time someone will come and tell you excited that you just met someone very special, believe them and ask about the quality of the dialogue they did. Definitely the goal after the first conversation is to see if the communication continues to be so fluent and positive, but if you feel immediate chemistry, trust her.

This phenomenon is not only valid for romantic relationships, but for any kind of relationship, whether with friends, co-workers, etc., etc.

Source: Psychology Today