As we expected the list is short.I'm gonna leave some links here about this.Resources are Reddit,
Fans’ Feedback and Reviews on Offical Sites and some databases,Manga Updates,Novelupdates, and MAL.
https://www.reddit.com/r/Manhwa_BL/comments/1tt7q0g/straight_ally_looking_for_genuine_truetolife_bl/
https://www.reddit.com/r/Manhwa_BL/comments/1pkgwo5/recommendations_for_realistic_bl_stories/
https://queercomicsdatabase.com/queer_rep/q*r-male+gay-male/
https://myanimelist.net/stacks/85395
..etc.
Queer & Adult.Psychological Thriller.No Tolerance for Psycho,R*pist and Abusive Characters.