First couple here, they have a contract fake relationship at first http://www.mangago.zone/read-manga/smurf_s_world/
Also here’s more enemies to lovers if you’re interested http://www.mangago.zone/home/mangalist/1002089/
If you can get past the art style this one is amazing:
http://www.mangago.zone/read-manga/to_take_an_enemys_heart/
Also this:
http://www.mangago.zone/read-manga/karasugaoka_don_t_be_shy/
http://www.mangago.zone/read-manga/karasugaoka_don_t_be_shy_2/
Also fake relationship at first 1: http://www.mangago.zone/read-manga/kore_wa_koi_ni_fukumare_masu_ka/
does anyone have some good bl manga/manhwa where they have a fake relationship or they hate each other at first