Why is Hrithik Roshan miffed with Katrina Kaif?

It all happened when Katrina Kaif's rumoured lover Ranbir Kapoor paid a visit on the sets of 'Bang Bang' to surprise his lady love and Kat left the shooting in between to spend time with her beau.

The shooting of Hrithik-Katrina much awaited film 'Bang Bang' stopped for several hours as the 'Dhoom 3' actress was busy with the 'Barfee' actor and this miffed Hrithik, who waited for long before the shooting resumed.

Katrina and Ranbir are going strong for a long time now and there are reports that the two are planning to live-in together in Ranbir's new pad.

The couple has even met an interior designer to set up the new apartment which the Kapoor clad recently bought and are even planning to throw a house warming party for their close friends from the industry and there are reports that the two will make some official announcement.

"Too much has been said about Ranbir and Katrina. Though they haven't spoken a word about it, the two have always maintained that they are special to each other. They also don't shy away from being spotted in public anymore as their families are aware of the relationship. They did go through a rough phase in between, but then again which couple doesn't fight?" a source close to the actors said.

The speculations have always been rife about alleged love relationship between the 'Ajab Prem Ke Ghazab Kahani' actors. But now it seems that Ranbir-Kat are all set to make their relationship official.