Actually very similar, except crush fade faster than love.
Crush is like you like her a lot, your heart beat faster when you
in front of her. You dun see anything bad about her, everything
about her seems good. It is more physical at this stage than
emotional at this point. Easy to recover from here.
Love is like you like her even more, even when you are not around
her, you still keep thinking of her and you keep bringing her name
up when you talk to your other friends. At this point, it is all
emotional and it is really "poisoned" very deeply liao. Not easy to
recover from this one, needs lots of time to let the poison slowly
fade away. 
