Responses
Don't Mix Business with Pleasure!
https://www.mangago.zone/read-manga/don_t_mix_business_with_pleasure/
The MC is a BL writer and decides to use the ML as "research material" for the top in his next story, but they end up dating.
I just liked some like mangas where BLs kind of play a role it letting the characters realize their feelings so maybe something like that. To be specific maybe something where it's mutual pinning and the guy who isn't the mangaka reads the guys work and think it's a confession