Ruhi will try to show Rohit how much effort she is putting into their marriage. Rohit nearly believes her when he sees that she seems to not have moved on from Armaan.
Abhira loves Armaan a lot and is affected especially since Ruhi is back.
She knows Ruhi has been the mastermind in trying to separate her from Armaan and thus does not trust her.
We've recently witnessed how surprised Armaan and Abhira are to discover that Ruhi and Rohit are also there in the restaurant when they arrive at the date spot.