First of all, i think you should make sure if the strange feeling u have felt is really love. After that, u can tell her that u love her by showing more and different affection than before. Make her realized that u have feeling for her. And then, you can tell her by words. She might think that is only a joke,but u can look into her eyes and say that it's true. By looking into ur eyes, she'll know. I hope u can tell her and she'll love u back. 加油

Writing is the easiest way and doesnt work for such situations I believe.You must say '' I love you '' to her face to face, other expressions wont have any affect I think.

enm .as a girl ,i want to tell you that not a girl will take the words“ i love you" as a joke ,she will take it seriously,and love is for two people,if you have the feeling that you love her, i am sure she can also feel it ,you are a great man ,tell it brave and you will know the result,maybe the only thing you lack is the confidence, then not hesitate!tell her !and i am sure you will win her heart!

Hey dude do you love someone in italki? isee man guys always feel that ! who's she! Yanyan ? i wanna see you, could you ad me dude ! there"s some more intersting then love !! hoops !

but i think u are till a kid