https://www.mangago.zone/read-manga/protect_your_purity/ this ones really good if you haven't read it yet
The man who can't taste
Love so pure
https://www.mangago.zone/read-manga/shitsuren_junky/
https://www.mangago.zone/read-manga/dangerous_vices_of_a_gentleman_loan_shark/
https://www.mangago.zone/read-manga/yakuza_wo_shibatte_ii_desu_ka/
https://www.mangago.zone/read-manga/junketsu_drop/
https://www.mangago.zone/read-manga/yuutousei_wa_mi_no_hodo_shirazu/
https://www.mangago.zone/read-manga/kantoku_nekona_ore_wa_dame_desu_ka/
Yaoi recs where they go from FWB to lovers?
OR, where the MC or the ML already has a FWB that they eventually have to call it off with