Well after watching today's segment its pretty clear that more than sona someone has gotten more majnu and that's payal's bf. Now whether payal still loves him or not or will still continue her relationship with her ex that's another question even though it seems like payal too wants to be with her ex.
Dev on the other hand is doing all this to pursue sona. Its a strong possibility that somehow dev only transferred the message to her ex about their coffee date.
But I feel payal was a wrong girl chosen. If the situation reached to marriage then more than sona stopping the wedding the possibility is more potent that her ex will stop it from happening.
So instead of sona ki deewangi we will see payal's ex deewangi which has already started.
But my question is will after this slap gate, dev and payal's ulterior motive marriage proposal will end???