I think Raunak will be the ideal husband for Kasturi. As all of u said, only he deserves a partner like Kasturi, not Robbie. She will get a good husband and good parents-in-law. I think this serial is going in the KTH way. If she marries Robbie, then Devika, Nikhil and Alaana will always look for a chance to malign her image and brainwash Robbie and she will have to prove again and again that she's innocent. It's better to marry a person who has faith in u rather than a person who suspects u always.