I'm not even as mad at Rahul, because his situation is understandable. He's doing this for his family. If Madhav hadn't brought his mother in between, I'm sure Rahul would have gone ahead and told Aradhya the truth!
Madhav, I understand you're into this girl, but that does NOT mean it's right to play around with her life like this. You emotionally blackmailed your friend to keep Aradhya in the dark. Why? Because you think your friend is her prince charming? Let me tell you one thing. Rahul isn't her prince charming, and neither are you, because you'll both break her trust after all of this. She said it herself, she believes in trusting your partner. Here, Rahul and Madhav are both responsible for breaking her trust.
Neither of them deserve Aradhya.
About Aradhya, I'm wondering if she actually expected "Ehsaas" to be like that in real life. Rahul was right in what he said to her. Ehsaas cannot be how he sounds on the radio 24/7. She needs to come out of that delusion too.