The current situation cannot be compared with Radhika track, as that time he was blamed by Kavya herself purposely and he just believed her and asked her to tell the truth but never tried to find the truth. He also believed Giriraj/Omi when they misled him about Kavya.
He is married now and came a long way from there. Now, its not like someone is misguiding him. He is doing it purposely and willingly.
He is proving himself that he never loved/trusted his wife ever, completely opposite of whatever he did after the marriage in 1.O (be it helping her standing against Giriraj, helping Omi/Alka, helping her find Asha, standing up for her dad in the party, helping her reunite with her dad...etc.etc.).