Dylan was a psycho but charlize nurtured his obsession for her but the rest is true they are all psycho who nobody want to marry except for their fictional partner
Most of these FLs are in the end lowkey very attracted to their beauty, wealth, power, influence, status and superiority... Thus they quickly forget that these messed up MLs trying to harm or kill them.
In "Father, I Don't Want to Get Married!" the bloodthirsty ML only stopped trying to murder the FL because she has the NOT LIKE THE OTHER GIRLS ATTITUDE, caught his interests and realized how cute pretty she actually is in his eyes... And the FL forgets and forgets that he threatens her with his bloody sword....
The only dark haired MLs I consider lovely and healthy enough is the father (still feeling guilty for blaming his daughter for the death of his love and then trying to kill her but he stopped and then atone for the rest of his life) in "I Was Born As The Demon Lord's Daughter"; Cesar in "Survive as the Hero's Wife" (still very needy and childish but very respectful kind since the beginning) and Lancelot in "The Lady's Butler"(Very self-aware-reflective for a ML).
Now that I am older since I started to read the first chapter of this story and having seen so many other obsessive dark haired tsundere brooding angsty MLs in the following years...
I think Arhard is total fucking creep and unstabile violent manchild (￣∇￣") just like
Linden in "Doctor Elise", Ares in "Living as the Tyrant's Older Sister", Leofred in "The Justice of Villainous Woman", Hugo in "Lucia", Del in "This Is An Obvious Fraudulent Marriage", Travis in "The Maid and the Vampire", Khalid in "The Tyrant Husband Has Changed", Edward in "I Choose the Emperor Ending", Alexandro in "Beatrice", Asher "The Villainess Reverses the Hourglass", Dylan in "I Tamed a Tyrant and Ran Away" or Kiernan "Why She Lives as a Villainess" etc...
Sorry, not sorry.