He shouldn't have said that. He shouldn't have let you go.. He should have caught you right when you were about to leave and hugged you tightly.. Maybe you were okay with that outcome..

After the quarrel, you hurried away, not noticing that you ran into the road where a car hit you. Rui saw it and.. He hates himself so much and thinks he's guilty..

Now he's sitting next to your bed in the hospital and holding your hand, crying and begging you to forgive him for his stupidity, even though he understands that you probably can't hear him, because you're in a coma.