Responses
He was in love with her and was attracted to her. The Mangaka just started falling apart on his personality. In the story Yuki just didn't think he was man enough due to his father-- oh wait. Did Yuki have a guy friend? Yeah you right he liked a guy 1st and then fell in love, dated, HAD SEX and married Misaki, a WOMAN. So he is bi.
Yuki my king find yourself a new king