Meaning like aww thank you!!

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

It express the reaction that you get when you see or hear something very cute

An emoji used sometimes for what it actually looks like, when someone feels appreciated or is happy, but more oftentimes is used by females who think it’s funny and makes for a good argument point. Other than when making a point, they usually use it when talking about something bad that they have experienced or anything that involves negative emotions. Also the types to use “✨” and “💅” and they are sometimes used interchangeably.