Does she love me too ?

I've never been in such a dilema. For the first time in my life I am uncertain about everything. I dont know what I must do. There is this girl who I've liked ever since I've known her. She's been always on my mind. Now I have very near me. Whenever she's with me I've never felt that she belongs someone else. Never did she make me feel that she that she's commited to someone else. I always think that she is the only one who can understand me as I am. Love me as I am. But does she love me? I was sure that I did... but a recent conversation changed my perception of her. How can somebody love someone and yet not be sure of being in love? I had always been clear in my thinking... but today i am confused... really confused. Please help my love. I cannot bear to live a life this way. I cant say this to you, hope that you may stumble upon this some day.