The term "crush" is used to describe the feeling of desire to be with a certain person. Not to be mixed with lust.
Mainly happens throughout the pre-teen and teenage years, but can happen in adulthood as well.
Person 1: You know that person over there?
Person 2: Yeah. What about them?
Person 1: They have a crush on someone.
that really good feeling you get when you think of that specialsomeone who you think is fucking everything and that really bad feeling that youโll never be with them
i have a really big crush on andrew but im to shy to tell him because we have no chance together.