Getting over a crush is far more easier than getting over love. Your crush is someone that you admire because of superficial reasons. You may like this crush because of how she looks. You might like her because she has amazing leadership skills.
There are various reasons why you may like someone but as long as your feelings are not yet deep, then you do not have to worry about this too much. It will be easier to move on from the crush too if you have never informed your crush about it. There are times when you feel embarrassed about the crush because your ego got hurt in the process.