Actuallyyy the only reason he never divorced her was because he actually took advantage of the bad things she would do. Like politically wise, whenever Ophelia would do something bad, that event would always overshadow whatever Sylvester would do; like raising the taxes and something else—he wasn’t doing good things either but Ophelia smacking the countess was way more important to society haha.
It’s actually a really good manwha with a good story (though a little basic in some ways), it’s one of the fewest that’s actually pretty “original”. Never have I read a story where the fl is trying to seduce the man the OG villainess was having an affair with (and if there’s another one someone recommended pls)

like fl are you stupid?? the husband didn't divorce the OG ophelia despite all the shit she pulled, what makes you think he'd divorce you if you if you do the same shit? I really liked the art but but I'm dropping this