My cure is the devil's tear

Trapped in a sequence of time loops, I have gone weak and fragile. My whole body is paralyzed, except my upper half. My role in this world is the weak female lead that will soon die from the paralyzed body, after repeating the same life cycles multiple times, I have gotten so tired of the same events happening...over and over again. Until one day, a difference finally made sense to me in my 13th life. A solution to my current paralyzed body finally got an answer from a mysterious saint. It's the devil's tear, just a single drop is possible to cure me. But even little kids know that it is an impossible task, the devil is immune to crying. Even my beloved male lead boyfriend hates the idea, he would rather make me suffer paralysis for my entire life, than to try the possible solutions. In the end, after my 14th life begins, I start to notice some changes...my beloved is no longer the typical hero, this time, I'll save myself. I will make the devil cry, I will take his tears for mine.