Dafuq away from me's feed

Like I'm trying to understand- all the other characters have some motivation for reasons what they do... But what are the Emperors? All I know is that he fed a cookie that left our Queen, possibly, infertile. He wishes to keep our Queen by his side while loving another woman. All while our Queen is unhappy and can never love anyone. Right now he's just being a spoiled child who has everything he wanted at his disposal, and maybe that's why he likes the commoner Empress? That's my best explanation for why, but it still doesn't make sense what his motivation is or why he loves the commoner Empress.