This is what I could feel Naira and Karthik's inner mind saying in yesterday's episode.
You know that feeling when you are in a room and oxygen level decreases, or there is shortage of air. You start gasping for air, that is the only thing on your mind. The same was Naira in yesterday's episode. She kept thinking, she will invite Karthik for the party, she will apologize, she will never hurt him, he was on her mind all the time.
You need air around you to live and Karthik needs Naira around him. He couldn't get sleep he had to open his laptop, her pictures reflecting even in the mirror, in a away she was surrounding him and than he seemed to relax. Just like a person relaxes after being deprived of air for long and finally receiving it.
Mostly love is associated with Dil and dhadkan, but if your heart beat stops even for a minute you die, that doesn't happen, many people live after their soulmates pass away, or our separated, some live like they used to live before, some just breathe. But who love like Kaira, those who have became the air of one another, when they part, there is life but each breath seems difficult to take and than slowly after suffering and suffocation, after blackness insulting you death comes.