SPOILER ALERT!
I really really am curious about other people’s thoughts on the drama, especially the connection between the timelines and the ending.
Let me tell you my theory. They are actually reincarnated or reborned into the modern times. The 1st lifetime that they’ve been through is on the ancient times. Here, the FL became a princess and was married to ML. Then they are reincarnated and live in the modern world. They meet again and become husband and wife, lived happily together, yet it all went down after ML got diagnosed with mental illness. Their relationship fails (again), and this is when FL got into an accident. She fell into a coma, thus seeing her past live as the princess, but woke up and got an amnesia. He acts like they are still in a relationship, and again, sabotaging their relationship by purposefully changing the FL’s medicine so she can keep forgetting their past and keep being with ML. She eventually found out because her memories came back, and decided to leave him again. She almost got into another car accident, but this time, saved by him. He instead got into the accident, went into coma, see their past live (the ancient times), woke up, and finally realizes that maybe they are not meant to be together after all. He realizes how much he hurts her, and can finally let go of his obsession, and at the end he gave her the divorce paper.
What do you think? Maybe you guys have different theories? I would like to know your opinion. And do you like the ending? Because I personally love this ending hehe.