I Think all the romance and everything was done, so dev got the good times with sona, and they were happy being with each other. In a way it's to show dev that he is happy when he is with her compare to being with his drama queen ishu. And man s psychology, they will miss woman more after a good intimacy. And we saw on the episod he was so beh chain without her. It was all to give dev his toy to play and then take it back. Now more then he cares about his mistake, he cares not having her in bed . He slapped her father then asking sona what's wrong, like seriously?????. I think sona should say I will slap ur ishu then I will ask you how it feels. Oh sorry only these two son- mom are having "especial " bond. Or should I say only these two are namonas with their disgusting bond. Ishu ruined the mother and son relation by being so sick. So it's good sons give him good time, now his lust is not give him any pace. He should be honest to his god ishu and tell her his lust his disturbing him. I guess ishu knew it already hence she said on today's episod he will be fine. She knows he doesn't care about sona and her family, it's just that he is missing the lust part .