What's Your Kindness Story?

There is a girl in my school. One day she came to me and said Hey! I didnt know her but i replied her with a hey and a bright smile. Next day she came to me and said me I like you, Maybe bcoz u r sweet. I felt sudden happiness and said her 'Aww Than you so much". From that day We both keep saying hello's and hey's and passing out sweetest smile to each other.
It is her act of kindess that makes me feel good.