He Changed me and then changed himself

I was sitting in my examination room to give my exam. It was the first time when I saw him he was sitting beside me. At very first sight after seeing him I exclaimed to my friend that he was the most handsome boy of the examination room. Although it was only for fun but I have a crush on him. Everyday I came to my friends and used to say that today anyhow I will say hello to him but I always hesitated to do so. As soon as I reached home after my exam I sent a friend request to him on facebook. He accepted the request and messaged me first a hello. I replied him. That time I was so unaware that, this sudden crush is going to mean alot to me. We chated for few days like friends then a night came and he said to me that he loves me. I was quite sure that he doesn't love me all he wanted is to have fun and I also wanted a enjoyment so I said a yes to him. I was his girlfriend for nearly ten days but then I felt like I'm betraying him so I said to him that sorry I can't love you because I don't love you but I like you so let's be friends. He said okay because he don't want to See me sad and also don't want to force for the thing which I don't want. But for the previous ten days I felt so special. He made me feel like I'm his world. He loved me so,so,so much that I can't even describe it. I was a pessimistic person. I was very alone. There was no family support with me as I was a girl so my father don't like me and I was having a very bad past. He was the first person whom I told all of my secrets. Those secrets were related to my past. He started loving me so hard even after I don't love him back as much as he loved me. Our bonding became stronger and strongest day by day. We were connected by soul. Then I got to know from somewhere that he is having a relationship with another girl. I asked him he said no and I trusted him. All he said that she is his friend. One day he said to me that just remember one thing you are my life and she is more to me than my life. I said OK. I needed him desperately because I loved him and I respected him. He changed me. He make me believe that not everyone is same. He teached me how to live life happily and be a optimistic person. Then many people came to me and used to say to me that he is having relationship with that girl. I said to him that I don't want a relationship now. We can be just friends. He was okay with it. Then we just remained friends for about two months. And it was Sunday morning when I woke up I saw there was no name of his in my inbox and then I came to know that he blocked me. I was sad from inside but pretended like I don't care at all. Till the date I am not able to find the reason why he blocked me. Now all I have decided is now I will never attach myself with someone emotionally.