https://www.mangago.zone/read-manga/trash_of_the_count_s_family/
https://www.mangago.zone/read-manga/debut_or_die/
https://www.mangago.zone/read-manga/leveling_with_the_gods/
https://www.mangago.zone/read-manga/this_is_the_law/
https://www.mangago.zone/read-manga/the_live/
https://www.mangago.zone/read-manga/kill_the_hero/
https://www.mangago.zone/read-manga/judge_lee_han_young/
https://www.mangago.zone/read-manga/king_of_drama/
https://www.mangago.zone/read-manga/the_heavenly_demon_will_give_you_a_massage/
https://www.mangago.zone/read-manga/acting_genius_top_idol/
Not romance but later in story some side characters have crushes, not main focus tho.
https://www.mangago.zone/read-manga/maou_jou_de_oyasumi/
non-romance manga y'all...