my chatting friend

I have a chatting friend on the skype.
She is just fifteen years old.
I thought we both know our sex and age. We have been chatting friends already for some month.
Yesterday, when we were chatting, it turned out that she thought I am boy and she seemed to be a bit disapponted.
I felt sorry for her althoguh it is not my fault because we has talked much for three month.
So I introduced my classmate which has a nice gentle charactor and good looking.
I do not think he is harmful because he is nice.
I did not ask his permittion.