MeraToday when Krishna told Prats it was all an act for the outside world and he was still burning up inside many posters here questioned his behavior.
What he did was really a powerful moment. In fact since he came back to life he questioned her motives for doing things for him . She answered that she could never see him suffer or see him unhappy. When he came home he told her to stop doing the little things and she kept trying. He has never sulked or hidden his emotions from her. He is going through an internal battle as that night she slept on the floor clearly showed. He didn't want her close to him yet he couldn't stop himself from covering her with a blanket.
It takes courage, trust and faith in a relationship to be ready to expose oneself to their raw emotions so easily. The natural tendency is to curl up inside and defend oneself against the pain and hurt. Yet he lets her talk to him and is affected by her tears even as he expresses his feelings to her honestly. They are giving each other space to express their emotions honestly to each other. It's better that Krishna tells her he still can't get over the burning inside him than to sulk and just plain insult her and call her names and stuff. All he did was truthfully tell her how he felt. Sure she wouldn't want to hear that he only said it for the outside world but he will soon realize he only defended her bec' he trusted her character esp. after he gets a few clues and/or reflects on his actions.
Notice even after he said it he saw the tears in her eyes and looked away bec' it still tugged at his heartstrings to see her cry. As he said jab tum rothe ho na, tho kaleje me dukh hota hai, such bahtarein.