how does marianne fall in love with whilloughby?

Marianne falls in love with John after she twists her ankle while falling down a hill during a rainstorm. John rescues her, is deemed "Marianne's Preserver" by her sister Margaret, and he gets the girl...... she is smitten!

Marianne wanted a man like fire with the same choices and attitudes .... like a prince in a fairy tale. Her eyes were blinded by Willoughby's handsomeness. .... she believed him as his prince...