We know that Ovi is self-absorbed. When she heard Purvi's name once over the phone while Arjun was talking with his dad when he came to India and met with Purvi first time. She asked Arjun immediately about her. When she found out Arjun had given a ride to Purvi she sent Teju to the office to find out about Purvi. Today during the party Arjun was standing next to Purvi very close, when she said Hi to Arjun, he did not respond to her. Arjun did not show any joy seeing her. Even when they were exchanging rings Arjun did not look at her once, he was constantly looking at Purvi. Ovi did not notice anything? She did not have any questions regarding Arjun's behavior? Let's say for a few minutes Arjun was in shock with the surprise but what about after ceremony? He did not spend a few minutes talking with Ovi, and he was seeing her after three months. There was not a single sign of joy on his face, and same Ovi did not notice anything who used to get so suspicious hearing any girl's name from Arjun's mouth. Really Ovi how come you are so dumb? You wear lots of make-up and a beautiful dress but Purvi still look far more beautiful in a simple saree.
Ovi did not notice Arjun's behavior but no one else noticed it either, DK, Manav, Teju, Mr., Lawyer Sachin.