I think Dev is not that bad. Today he gave a good blast to Nayantara. He supported his brother Maan while Nayantara was trying to create a bad impression about Maan to dadi. He is slowly getting irritated by Nayantara's attitude. He is not even supporting her because he likes his brother Maan . He will get more angry and will also start feeling guilty of his mistakes. Iam sure he will feel bad when he comes to know that Geet is pregnant . Moreover he is responsible for it. He will find it difficult . Circumstances will surely make Maan get married to Geet once Maan finds out the truth. But after Maan and Geet 's marriage , I don't think Dev will try to harm both because he will slowly decide to stay away from both of them and may wish that their marriage life should be good. I mean to say he will wish his brother be happy with Geet n go ahead.Because heart of hearts he has started respecting his brother, Maan. I am sure that he will do good to both Maan and Geet in future.