if it was a normal person's relationship, sure, but it's not. she's actual royalty in the story so it doesn't matter how she treats them (original or not) since it's literally illegal for them to retaliate in any way. not saying that it's right--it's just a death penalty should they not comply. The new* princess/queen/whatever her title is just really generous compared to the original* version of that person--who almost definitely WOULD have them killed alongside whoever they cheated on her with.
if the princess was a "prince" people would had said he's an asshole (i saw it befor) but for some reason people are blaming him instead, regardless of if she is royalty or not they're also a human being and he probably did it to give the princess a test of her own medicine even though it's foolishness of him to do so. Still people in the comments are talking like male leads are the Mc's puppets . I know things like this used to happen in real life long time ago but lets not forget this is a fantasy world story
if you know it's a fantasy story you should know there's at least a loosely based frame around how things used* to be. People weren't gracious or forgiving over the slightest mistake in those times. remember that famous King Jackass who killed his wives for bearing him daughters instead of sons just because their religion said divorce was immoral? & then King Jackass would just get a new wife & try the same thing again? It's not a sweet story by any means, but it is certainly a memorable one that people have gone on & on about centuries after that sh*t went down. If authors want to write something that leaves an impression they can't afford to sugarcoat everything enough for every single story to get be happy-go-lucky. I like your optimism, but this story just simply isn't your type. I'd recommend something like "I Raised Cinderella Preciously" if you want a sweet story. or "Beast with Flowers" for something more...passionate? that feels like that's the right word for it but it's not like there's any smutty 18+ scenes in it or anything. A personal favorite is "Bring the Love" --zero negativity or drama in that one it's just pure romance & adorable sweetness (the MC is a retired female warrior who has to deal with maintaining her status as head of the family since her brother bailed on his position & I'm really loving the LACK of drama despite this).
Actually i read the story only for the male leads so ....
I'm not saying any thing about the author but the comments are what get on my nerves isn't it better saying he dig his own grave instead calling him a cheater and shaming him? It's like they're from that time or something hahaha
also thanks for the recommendations ♡
I mean he is kind of a cheater since he wanted to be the princess' concubine know how she was and then sleeping with someone else but then again I think she told him to do that. I just find him annoying for all his unnecessary drama as he knew what he was getting into at the start. I also dont like that he was basically betraying her by giving out info or helping Yuriel because of what he got himself into.

Stop blaming the male leads they don't owe her a shit.
How could you say robia was a cheater when she (the original princess) didn't give a damn about his feelings and when he confessed his feelings to her she replied with "that's boring" was always sleeping with any man she could find with or without their consent. All of them had every right to sleep with whomever they want.