Some of my favourite scenes involve one romantic lead feeling distraught or heartbroken because of the other romantic lead's sadness, pain or suffering. In the Untamed, for example, when LZ learns the truth about the whole golden core situation and the pain and suffering that WY endured, the way his heart clearly broke for WY was so palpable. Very emotional. Very satisfying.  

Really any scene where one romantic lead is deeply moved / experiences intense emotions based on the other romantic lead's experiences / emotions tends to be very satisfying. The emotions don't have to be negative. If one romantic lead experiences something that makes them intensely happy, and their happiness makes the other romantic lead intensely happy, that would also fit.

Please recommend any romance dramas with that sort of scene ^^

Edit: Simplified.

If my understanding is correct then the two dramas that come to mind are:

  • The Romance of Tiger and Rose (when the FL continually gets attacked during a fighting/martial arts(?) competition, the ML's expressions are like he's hurting for her)
  • Jun Jiu Ling (when the ML mistakenly learns that the FL was burned alive in prison, he burns himself with a lighter and relive what might the FL have gone through)
 lanzhanya:
Jun Jiu Ling

One lead inflicting pain on themselves to mirror the pain that the other lead felt isn't quite what I had in mind, but it's definitely in the ballpark. Reminds me of the brand scar in MDZS.

 lanzhanya:
The Romance of Tiger and Rose

One lead clearly getting angry and upset when the other lead gets hurt does match what I'm looking for. This scene is actually a really good example because it's dramatic, drawn out and the ML's reaction is pretty much the point of the scene.

Thanks for the recs lanzhanya ^^

Maybe Eternal Love when the ML takes away the FL's eyes/eyesight in one of the lifetimes and you can see the pain when he had to do so even though he's not the one to go through the real pain.

Definitely Love Between Fairy and Devil when the ML experiences the FL's emotions tenfold for quite some time.