This page has some of the heavier enemies to lovers, if that’s what you’re looking for: https://www.mangago.zone/home/mangalist/1002089/?filter=&page=2
https://www.mangago.zone/read-manga/anti_alpha/
https://www.mangago.zone/read-manga/hogu_hagyeongsu/
https://www.mangago.zone/read-manga/if_i_never_loved_you/
https://www.mangago.zone/read-manga/the_adonis_next_door_100_days_of_forced_love/
https://www.mangago.zone/read-manga/bokura_no_koi_wa_shi_ni_itaru_yamai_no_you_de/
https://www.mangago.zone/read-manga/h_mate/
https://www.mangago.zone/read-manga/like_a_tidal_wave_from_pheromone_shower/
Yaoi manga-manhwa with a love-hate relationship but not in a cute way