I'm not sure if I have understood correctly, but I think these ones have the dynamics that you're looking for
https://www.mangago.zone/read-manga/i_ll_be_here_for_you_19/
https://www.mangago.zone/read-manga/palace_of_bardo/
https://www.mangago.zone/read-manga/december_rain/
https://www.mangago.zone/read-manga/the_beast_must_die/
https://www.mangago.zone/read-manga/dearest_sm_scan/
https://www.mangago.zone/read-manga/shutline/
https://www.mangago.zone/read-manga/flip_the_script/
https://www.mangago.zone/read-manga/dreadful_night/
https://www.mangago.zone/read-manga/lifeless_man/
https://www.mangago.zone/read-manga/kimi_to_natsu_no_naka/
https://www.mangago.zone/read-manga/kimi_no_yoru_ni_fureru/
https://www.mangago.zone/read-manga/come_to_hand/
I dont think they have the same personality per se, but I do think they are both the quiet type, I guess...
pls recommend bl where they're both chill/stoic/nonchalant/the quiet type, i got curious if there's anything like that out there because the trope is usually the opposite attracts