Do crushes go away?
Most crushes are short-lived--they either progress into a relationship, or dissolve. Even if your feelings are intense, its good to know that the most destructive and heart-wrenching emotions will pass soon. But the intensity of the romantic feelings will eventually subside.
Why do crushes develop?
It happens when your sympathetic nervous system kicks, but can also be caused by stress, fear, or booze and drugs. If theyve got dilated pupils every time they see you, arent running screaming or obviously under the influence, they might be crushing.