Responses
https://www.mangago.me/read-manga/green_apple_paradise/
https://www.mangago.me/read-manga/payback_1/
https://www.mangago.me/read-manga/sharpe_and_rabbit/
https://www.mangago.me/read-manga/the_third_ending/
all of these have talking stages(?) -> realizing attraction -> push and pull -> attraction -> denial -> slowly accepting -> romance ~ iirc
please reckoned me some good slow burns preferably BL that are yaoi and not shounen ai