I have watched of Dramas where the FL falls in love with her friend's crush (first hates him then loves him) like what happened in Ready, set, Love between (Chanel, Bovy and Max) but it was most of the time a supporting story. I want it the MFL plays the character of Bovy but the MML wil be new character so the characters of Chanel and Max will be support or second leads. I think it also happened in Suspicious Partner  but in this version it was the MML. I hope you understand me, Thanks.

20th century girl is pretty accurate to the description but it's a movie.