Sadly that also the truth in Shoujo Manhwa. I wonder what's wrong with Korean Author, why they are so obsessed with toxic romance, they all have the same magic ingredient for the ML 'a rich Duke/Prince/CEO with handsome face, hot abs and big dick + childhood trauma + thrash personality', no matter how they abused/raped/cheated the MC, all is forgiven after he is crying his hearts out for one night about oh how tragic their past is and give their coat/shawl whatever and baked some cookies something. When I watch American series, those with toxic relationship always end up beaten and bruised or dead, that's the reality, love doesn't change toxic people.
This ain't romance, if Seungho was ugly nobody would ship them.