Is there anything going on between you and the girl ?? judging
from the way you put things I dun think there is anything going on,
so you should have jus told her the truth when she call u. Or am i
wrong ???
its better that you come clean with her now, and in future, you
should jus let her know that you are going out with other female
friends, I'm sure she'll understand ..... how would you feel if she
were to do to you what you've done to her ?? in a relationship, its
all about trust and you are missusing her trust.
Treat others the way you want them to treat you. 
