What do you think about it?

This is I´m working at now. I don´t know if it´s correct English, cause I used google- translater for translate this, but if you understand it: What do you think about it? :

The day was gray and it was raining outside. There were hardly any people seen on the streets, but I ran, soaked by the rain, down the street. I walked toward a house, but went unnoticed on the opposite side of the street. I looked up to the building and reminded me again at that time, to events to which I recalled many years later. It is in this house he lived not too long ago. Whether we were just friends, or maybe even more than that, I still do not know. I called me back the memory of an evening that was not even long ago. We were in his room and he played me on the piano before and since I had the moon light sonata by Beethoven have to play to hear it was one of my favorite pieces.
His fingers glided over the keys decided that he had never done anything else than playing the piano.
I started to cry and the rain grew stronger, as if he was crying with me. I now had to acknowledge that our paths have separated. He was one day suddenly disappeared without a trace, as if it had never existed. I knew that this was the best for him and that it would be better for him with his father in Aachen as his mother, who lived probably still be in this house, but the tears would not stop. Had I been able, I would have followed him to Aachen, but I could not, however, and could not do anything. I was sure that his mother had seen me, because her son had been away since they often sat by the window and looked out the knew everyone in the neighborhood, but if she regretted her actions and her son missing, was that even after many years, a mystery.
One last time I looked up at the old house and walked away, wohhl knowing that the last time was.