If you don't mind manga:
https://www.mangago.me/read-manga/our_not_so_lonely_planet_travel_guide/
https://www.mangago.me/read-manga/hige_to_suzu_to_shabondama/
https://www.mangago.me/read-manga/hiyoko_to_yoru_to_yuenchi/
https://www.mangago.me/read-manga/family_now_and_forever/
https://www.mangago.me/read-manga/i_need_more_than_just_romance/
https://www.mangago.me/read-manga/torokeru_tamago_to_bed_no_naka_de/
https://www.mangago.me/read-manga/sweet_hour_1r/

Any bl recommedations with established relationship from the start itself? I have read most ordinary relashionship, anything other ?