Asking for a manhwa name

I had read this manhwa I forgot the name can anyone tell, the story goes like this - both of them knew each other in childhood but they got separated. The top remembered the bottom but the bottom forgot about the top. Both of them became got together in university but the bottom didn't recognize the top. The top used some stone or something and used to appear in the bottom's dream and like this they got close. And I remember there's another person in the bottom's life and he was kinda crazy, and he kidnapped bottom to another island. Somehow the top went there and got back the bottom. And they ended up in a shrine and they had s*x and the shrine master got to know. There's some more stories but I forgot. Can anyone recognize the title of this manhwa? Please let me know please!