Gripping Historical Romances?

I recently watched an older CDrama that gripped me.  Too Late to Say I Love You. Was startled by how damned good it was.  There is a bit of a love triangle that dissipates fairly early on into a protagonist and antagonist role for the ML and second ML.  As well an antagonist relationship between him ( the second ML) and the FL.   I cant really describe it as a love triangle.  

Anyway,  I recommend trying it for a few eps and see if you dont find yourself hooked.