This movie was such a roller coaster

I love how intense the sex scences is.such a roller coaster i had butterflies in my stomach the whole time especially when hong rim kissed the queen it was such a sincere response... what i didn't understand was why did hong rim have sex with the king if he didn't love him. Was hong rim just following the kings orders to have sex with him? I did not fully understand the ending and i want to know what happened to the queen. now im left with empty feeling i hope a sequel will be released . overall I didn't expect to like this movie as much as i do