Ever since the trailer of Tamasha released, everyone has been raving about the on-screen chemistry between former lovers Ranbir Kapoor and Deepika Padukone. Their sizzling chemistry even got a big thumbs-up from the actor???s mom Neetu Kapoor. But the trailer didn???t have the same effect on RK???s current girlfriend Katrina Kaif, with whom he is sharing screen in Jagga Jasoos, which will hit screens a few months after Tamasha.