This dialogue was really deep. In one line Sonakshi explained Dev that even today she is only person who understands him. She knows how lonely Dev is from inside and noone in that house understands him, ne new partner in his life will be someone whom he will be able talk and open his heart.
Sonakshi always knew more than anything else Dev needs a friend with whom he can open his heart. She as a wife also always wanted to remain Dev's friend. Sonakshi knows if Ishwari will choose a girl for Dev she will not hate her like she hated Sonakshi and Dev will find a companion.
Sonakshi u are the only person who actually loved and understood this man.
Really loved this dialogue!