I'm pretty sure it was Japanese, though I could be wrong. Maybe cycled on Netflix about 3-ish years ago.
The movie was about an eccentric Manga artist that was crazy in love with her boyfriend, who was a doctor. He breaks up with her and leaves her emotionally wrecked, until she decides she's going to win him back by being the girl he wants. This is where it gets fuzzy... Somehow there's another guy that is getting paid to watch her and make sure she can't do anything, then they wind up falling love. Everything was going well and she gets over her ex until she finds out the truth about how he got involved with her and he leaves, only to come back at the end after she's had time to heal and get her career back on track.