Are Katrina, Ranbir engaged?

Latest buzz in the B-town is that rumoured lovers Katrina Kaif and Ranbir Kapoor are engaged. The first look of Abhishek Kapoor's 'Fitoor' is finally out and what caught everyone's eye is a ring sported by Katrina in her ring finger. According to the reports, Kat has got secretly engaged with her long time beau Ranbir Kapoor. The couple is said to be dating since the filming of 'Ajab Prem Ki Ghazab Kahani'. There are even reports that the duo will break the news to their close friends during a house warming party which they are planning to throw once the interior is done for Ranbir's new apartment.