any established couples bl that have been dating for a long time?

Okii these are some I read
https://www.mangago.zone/read-manga/boku_no_papa_to_papa_no_hanashi/
https://www.mangago.zone/read-manga/eat_me_up_my_husband/
https://www.mangago.zone/read-manga/loss_time_ni_hanamuke_o/
https://www.mangago.zone/read-manga/1866/

Really good https://www.mangago.zone/read-manga/hige_to_suzu_to_shabondama/

Most ordinary relationship

i’ve read all of these but thx ╥﹏╥

https://www.mangago.zone/read-manga/shiawase_gohan_maki_to_hanazawa/
https://www.mangago.zone/read-manga/pochi_to_tama/
https://www.mangago.zone/read-manga/neko_x_neko/
https://www.mangago.zone/read-manga/konna_nichijou/
https://www.mangago.zone/read-manga/nichijou_climax/
https://www.mangago.zone/read-manga/sweet_hour_1r/
https://www.mangago.zone/read-manga/oresama_no_toriko/

Some school life established relationships:
https://www.mangago.zone/read-manga/shishunki_cherry_bullet/
https://www.mangago.zone/read-manga/my_lovely_bunny/