Looking for k drama from clip

I saw a clip once of a scene where the girl is in the hospital and asks the guy next to her how long he could hold up is arm and he said something like as long as you want. They then showed a scene in a cinema where the girl was laughing and he was holding up the IV bag for her, so he helped her leave the hospital and enjoy the outside world. The comments said that she did end up choosing another guy despite all that. I would really appreciate someone telling me the name of what the drama is called since I can’t find the clip. This would be my first k drama. Thank you very much.