Undescribeable Feelings

I don't know why everytime he chat me,I felt like my heartbeat isn't in their way. I know in his eyes,i would never exist,but i still hoping for a miracle..A miracle which can bring me to his deepest heart..I don't know where it started to fall,all I knew is he is important enough for me. We've known each other for a year. But theres no step  I've made to bring this into relationship. There's no way for us to be together, that's why i've decided to keep single till i really find someone who can win my heart & replace him..I hope he'll never know what i feel & we'll always live like this..as brother & sister :)