I love how just a few weeks back, Krishna saved Prats from the poison but still couldn't trust her to not hurt him again. He saved her life that night. Finally, Prats saved Krishna's life, not by saying thank you, but "I love you." These words were the words Krishna came back from the dead to hear. These are the words Krishna has waited since SR for. They are the inspiration behind the change in the Prince.
It is those words which extracted poison from Krishna's heart, the poison of mistrust, suspicion, betrayal, and lies. Those words which every prince longs to hear from his Princess. While it's true we heard them a long time back when Krishna was walking backwards towards a cliff, Prats says them for a different reason now. She is opening the door of her heart, something she never did the first time they were uttered.
Here's to many more "i love you" moments for the two. One in particular I know everyone wants to see.