I think now sona should move on...
After seeing dev n natasha together she should get over him..
Sona should get serious about her career.may be she should attend a conference abroad where she is she is speaker.
Dev should start missing her and he will be with natasha but still be thinking abt sona.
After seeing sona is not as bothered as him.he will get jealous..and realize his love for her.
Dev babu ko thoda toh tadpna padega...ab shona ko itna tadpaya hai.itna toh banta hai.😃