Hm, a 'crush' is something that doesn't necessarily have to go anywhere, you just like seeing a certain person, you can know they would be totally wrong for you, but you still like them and are happy to see them etc.
Sometimes you want to be near them, sometimes you want to avoid...
A crush can be mutual and may not lead anywhere...
Sometimes you see them everywhere even though you wanted to avoid (or hoped to see them

) 'Synchronicity' - sometimes...
A crush is more fun than the 'unrequited love' part... It's basically before you know it's unrequited lol.. Or when you still think, hey maybe it's possible..
It's quite funny, sometimes... People can trip on stairs, or fall off a bicycle or do silly things... Looking back, it can be really funny...
