Arnav is just worried about Pari, and he couldn't see what it is exactly in the picture. Pari was so confident that ruhaan loves her and amidst that how can arnav think of what's in the picture? He is an amazing friend and he wants Pari to get all the happiness. He believed in every word Pari said so far. All he could do was stay by her side in whatever she does, and he would do that.
Coming to pari, thank God she atleast got the thought that may be, she is assuming things. She is assuming that ruhaan loves her, assuming that the card was meant for her. She is still unable to bear the thought that Mishaan are together. Something is happening outside the delusional world.😕