William was attracted to you since the first time you visited his house as Michael's friend. After that he asked Michael to call you home more often. That attraction wasn't something similar to love... there was even no lust. He was 43 old married businessman after all. He was treating you better then others and his cold purple eyes were always looking at you with deep thoughts in his mind. For some reason he obsessively thought that you're the only one who can understand him wholly.