Originally posted by: Ctrl-Alt-Del
This synopsis reminds me of a Korean movie I watched a long time ago that started in somewhat same way. I guess its name was April Snow.
Edit: Just searched and yes, its name is April Snow. Here's its synopsis:
"A man and a woman meet in the hospital after their respective partners are involved in a car accident. After learning that their spouses have been having an affair, the two begin one of their own."
I think one premises is the same, the rest of the story was different but I dont remember😆