Their well-kept secret is out of the bag. As Bollywood actor Ranbir Kapoor and Katrina Kaif were spotted returning from their holiday at the Mumbai airport together. Seems like their secret European-Dubai vacation is over. The two alleged love-birds still do not want to talk about their alleged relationship in public and deny any link; Ranbir went to the extent of calling himself 'single'. Which is why they did not leave from the airport together -- rather, one after another, a trait many lovers swear by to conceal the fact that they were together. So, according to the plan, Katrina steps out first, pretending to be oblivious of Ranbir's presence. And as soon as she leaves, Ranbir walks out of the airport with his luggage. Well, people, even when co-stars meet at a common flight, they greet each other and step out of the airport together. But Ranbir and Katrina orchestrated their exit. So, when two co-stars take the same flight at the same time, and return from the airport too at the same time, and don't even courteously greet each other -- it just adds some juice to the already wagging tongues. While everyone was wondering where exactly Katrina Kaif and Ranbir is, there is an eyewitness claiming that both were in Dubai. Katrina Kaif and Ranbir Kapoor's love story is mystery to the world while industry friends claim that the two are certainly dating. A certain Dubai resident named Sara wrote on her Twitter page that she saw Ranbir Kapoor and Katrina Kaif together in Dubai. Here are her tweets: Sarah ‏@SarahU178h, "Katrina Kaif and Ranbir Kapoor chilling at La Petite Maison, DIFC." Before their quick Dubai getaway Ranbir, Katrina were spotted at a concert in Ibiza.

A fan has recently tweeted a picture of Katrina with Ranbir and filmmaker Ayan Mukherjee at a David Guetta show held on the Mediterranean Island. So it has happened once again - the curious co-incidence of Katrina Kaif and Ranbir Kapoor being spotted together. But Katrina Kaif and Ranbir Kapoor being spotted together is a regular feature from past three months. In a series of events, Ranbir Kapoor and Katrina Kaif, the rumoured to be love birds in Bollywood have been spotted together trying to evade the media. In fact at the 'Qyamat se Qyamat Tak' bash, when Aamir Khan completed 25 glorious years in Bollywood, Ranbir Kapoor almost escaped an accident trying to dodge the media while giving a ride to alleged ladylove Katrina Kaif in his brand new car. But of late it seems the couple has got tired of this entire hide and seeks from the media! The two who are inseparable these days don't hesitate to make public appearances together hand-in hand. The two arrived for Karan Johar's birthday bash in the same car. Ranbir Kapoor dumped his 'Yeh Jawani Hai Deewani' co-star Deepika and arrived with Katrina Kaif in the same car. Before Kjo's bash Katrina was spotted coming out of Ranbir Kapoor's vanity van and not just this the two even arrived at Vidya Balan and Siddharth Roy Kapoor's party together. Three months and so many instances of them being spotted together at most unusual of places has given enough fodder for us to get thinking! What else explains this than the urge to proclaim their love! We think the day isn't far when the two will officially announce the committed status of their relationship. What’s with Katrina meeting Ranbir's mother, the yesteryear actress Neetu Singh, and bonding with her over private, family dinners.