Even thou Ridhima has moved on she accept the fact that someone other then herself can bring happiness to Armaan. Sure Shilpa hasn't bough him all the happiness but seeing the smile on his face today was so sweet because it has been what like 6 months since he smiled like that.
Ridhima needs to stop thinking about Armaan and his happiness because its clearly past her now, Armaan shouldn't have to explain anything about his life to her and plus I don't get why Ridz is even butting in anymore she made it clear that there is nothing between them.
Ridhima should stop being his mom and jealous and let him have some happiness.