After having signed the likes of Arjun Rampal, Kalki Koechlin, Gulshan Devaiah and Diandra Soares, Pooja Bhatt has now signed Karishma Kotak (who was last seen in the Arshad Warsi starrer Mr Joe B. Carvalho ) for her film Love Affair . Karishma will be reportedly playing Arjun's love interest in the film that's being written by Anvita Dutt and directed by Soni Razdan.