But the trouble is what can i do now! & what should I do!
This is first time in my life that i am worried about some girl.
She is my class-fellow.
iftikhar, my friend, this is a very difficult question for us to answer for you. There are many details that are important to know if a good answer is to be given.
With the little information that I have, I will tell you to make this girl your friend first. If you become very good friends with her, then it would be appropriate to begin to talk of deeper love. This is only my opinion, of course.
In some cases, a girl can become very surprised by a man who tells her that he loves her but he obviously doesn't know her well. There is a chance that she will think that you don't understand love if you do it this way. However, this isn't always the case.
I have been in love with a girl before -- although we are no longer together. Right now I am courting another girl, however I would not say that we are "in love" quite yet. I prefer to develop a very familiar relationship with the girl so that I can have time to be certain that I truly love her.