CowManure

I thought so too initially but then seeing the Queen's personality no wonder he doesn't like her.
Also, so far we don't know if the King ever took in a lover. However based on what's shown currently, apparently the King had someone he liked but couldn't be with (most likely politics). Doesn't seem like he physically cheated on the Queen, and didn't seem to have any concubines or any other children (considering FL is 2nd in line to throne after the prince). Also we don't know if both of them were forced into the marriage, or if the Queen forced him into it (an assumption based on the Queen's current obsession level). We don't even know if the King already let her know before marriage that this would be a no love marriage.

Honestly so far, the Queen seems worse to me. The only positive we've seen/heard of about the Queen is from her cousin (2nd ML) who implied the Queen changed after marriage because of love. But The age gap between the Queen and cousin probs means he was a kid before the marriage. (I'm thinking of an age gap because cousin seems around FL's age and the Queen is FL's aunt). Kids may not always see things as they were. The Queen could also have hidden her "bad" side in front of her cute little cousin. Of course, it could also be true that the Queen was truly good before marriage.

One of the biggest fault of the Queen imo is that she looks down on and belittles the commoners and those who are not nobles or are weaker nobles. and it's very obvious. Also she manipulates and uses people and then discards them without a second thought. Plus she seems to mess with FL only because the King favors her. There's literally no other reason (shown so far).

While the King is not a good husband, at least he's a better person and ruler than the Queen.

(Also did the Queen do something to the person the King loved? I was thinking of this based on the way she said "I got rid of one and another came" when she heard the ML's aunt was playing chess with the King)