It's the famous medicine that adds twist to the shows.
Nadira poisoned Azaan's mind against Afreen in the beginning, and now, Saniya is making Azaan believe that Afreen just wants to be away from Azaan and so she is uniting him with Saniya.
I'm glad we didn't get to see them meeting and stuff and that they only showed a flashback, it saved me from forwarding stuff. 😆