Crush is you want to be yours but it will never be. 
crush is only paghanga.

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When he/she's SMILE at you , your brain will stopped functioning and without neural transmission along with the abnormal oxygenation produces an episode of syncope. No doubt.... That person is your CRUSH!!!

crush or a infatuation is an admiring to someone who-you didn't know better.And it may your feelings change or your feelings (an admiring to him/her) will be gone in a few weeks.
pasensya na po sa grammar...
yup , nice ... d(^_^)b