you have a fear of being let down by people you admire
It means that your overly obsessed with your crush.
To dream of an old crush might mean the person is still thinking of theme.
If you dream that a boy that you like has rejected you, this is not a prophetic dream, it merely means that you are worried that he is going to reject you. It's on your mind. But it may not happen.
If you are dreaming about a crush, it simply means that the person is very important to you.
It means that you are nervous about your crush.
Dreams
This is a wish fulfillment dream, expressing your own desire to have your crush's attention. It does not mean that your crush is thinking about you, and it does not predict any future event.
The dream suggests that the dreamer's own mind is pointing out that the "crush" is unavailable and that the dreamer needs to move her affection to a more receptive person.
It means: you've got a crush, and so naturally you think about that person a lot, and so it's not horribly surprising that you dream about them. It certainly does not mean that your crush necessarily returns your feelings in the slightest degree.
It means he does not like u!
It means that you want to be a part of your crush's life. The dream only illustrates your own emotions. It does not tell you anything about how the guy feels about you.
It only means that your mind imagined a lovely experience for you to enjoy in the safe context of sleep. Your dreams illustrate your own emotions and desires, but they do not provide any information about what another person, even your crush, is thinking or feeling. This dream does not mean that your crush is thinking or dreaming about you.