I wanted you

This story is about a girl being lonely most of the time, don't get it wrong though, she likes being alone. One thing didn't go well though, she felt too alone. No one came when she needed someone. She then meets a guy who will soon complete her, the one who will support her in times of need. Unaware, she starts developing feelings for him. The guy knows the girl as if it's his own sister, but she? She rarely knows about him, it's simply because he never told her about himself.