Hello there,

Im looking for dramas, where there´s a female lead who is in love with her best/good friend. The guy should be not interested or taken or in love with another girl.

Are there any dramas likes that? 

Thank you! :) 

Currently airing drama Strong Woman Do Bong Soon
--> So far I like it, it's funny. The main lead has crush with her friend since high school but he already has gf.

Also Plus Nine Boys
--> There are 3 couple-stories here, but one of them fits your wants, I think (if I remember it correctly),, but this is really a good drama in my opinion :)
Thank you, Ill check it out :) 
Heroine Shikkaku (it's a japanese movie), Pinocchio (Korean Drama) Hope you don't know them already :)