Omg thank you!! Me too, i prefer the 3rd (?) Prince more, he's cute around her and he's cunning. At least, he's the first person who saw her grow when she was still fat. He thinks highly of her and honestly likes her in a secret way and shows his affection in his way, even mc is suspicious of him. And the black hair magician is uhhh no personality for now. No special traits yet except for his appearance?? Idk, perhaps he has sth but its meh
You forgot the 3rd prince knew about the cheating & he stayed silent about it. Then when Eve is dieting, he agreed with this brother's plan to sabotage her hardwork by tempting her to eat. He's sus & an accomplice. So even tho there's not much info about the blue-haired dude, he seems soooo much better than the 3rd prince already.
Spoilers I read from comments~~~
The 3rd prince isn't one of the MLs anyway. The one on the cover is the 1st prince & is the 2nd lead.
So...unpopular opinion...I don't like the black haired duke. Idk...it feels weird that they met like 3 times before this and he started catching feelings after the 2nd and now he thinks its fine to just...chill with her in the middle of the night...like idk. I feel like thats way too much to have only met her twice and then started to like her. Like he barley knows her. They've only met twice! It just feels weird. Maybe they met before and she doesn't remember it but until proven otherwise it feels stalkerish. As of right now I still like the 3rd(?) Prince more.