
Honestly the bar for romance male leads is so far down the bar descended to hell. Either a egotistical bastard with the emotional maturity of a brick because he's a Northern Duke or a tyrant emperor or a Magic tower Master or a mercenary turned War hero or a "obsessive" yandere whiny bitch that's basically a stalker rapist in a shell of a handsome face (they are not even that handsome these days)

Björn Dniester Ml of '' the problematic prince''
https://www.mangago.zone/read-manga/the_problematic_prince/
Leon Winston Ml of '' Try Begging''
https://www.mangago.zone/read-manga/try_begging/
Matthias von Herhardt Ml of '' Cry even better if you beg'' https://www.mangago.zone/read-manga/cry_even_better_if_you_beg/
Sorry all this ML are red flag, Leon Winston is the worst but I don't hate them. I couldn't resist so I have read their novels.
I wonder if you can forgive me for this recomandation so I will add a good good manhwa a hinden gem my fav '' A Married Killer'
https://www.mangago.zone/read-manga/a_married_killer/
I've read quite a few manhwas where the male leads are red flags — Mathias, Leon Winston, Bion — but this one I realy don't like him.