You met her once when you were a kid. It was then that she cried because she lost the necklace that her parents had given her before she died.You helped her find the necklace until it was found. Now you've moved to high school.You've forgotten her. (the necklace means a lot to you)

The girl in the class next to you started to be attracted to you since you helped her lift the book last week. (She is a mature, beautiful and smart girl)