Bollywood actor Ranbir Kapoor and Katrina Kaif can lie but they cannot hide. We know what they did last winter and we know what they were up to this summer.

But the regular, 'We are just good friends', 'There's nothing between us' and 'I am single' are sure to follow after the cameras caught them red handed.

Ranbir Kapoor and Katrina Kaif, who were long rumoured to be dating each other(but denying it), were spotted dining together in London along with their mothers.

According to photographic evidence, the couple were in the British capital where they were seen spending quality time in each other's company.

During one such occasion, the two mothers also joined them for a late night dinner.

Probably Ranbir and Katrina want to woo their mothers and asked for their blessings!

The onlookers claimed that Ranbir's mother - veteran actress Neetu Singh, appeared comfortable in Katrina and her mother's company.

As fans gathered around them, Ranbir and Katrina made a hasty exit but nor before letting the crowd get a few pictures.

This is also one reason why Deepika Padukone was missing while Ranbir was in London promoting their movie 'Yeh Jawaani Hai Deewani'.

Reports of Ranbir and Katrina's seeing each other have been doing the rounds after they shared screen in 2009 blockbuster comedy "Ajab Prem Ki Ghazab Kahani".

Since then, the actors were spotted hanging out together several times, but have remained tipped lipped about their relationship till date.

Recently, speculations of a brewing romance between Ranbir Kapoor and Katrina Kaif gained momentum, after the pair was seen in the same car while on their way to Karan Johar's birthday bash last month.

During the party, Ranbir and Katrina danced together to a few numbers from the film "Yeh Jawaani Hai Deewani". While the couple grooved to the tracks of "Balam Pichkari" and "Badtameez dil' till late night, Ranbir's ex-girlfriend and co-star in "Yeh Jawaani Hai Deewani" Deepika Padukone watched on.

Katrina was also said to have arranged for a 'special' dinner for Ranbir at her house. Since she was not sure what he wanted to eat in particular, she had reportedly placed orders for everything that he liked.

We guess it is time Ranbir-Katrina should stop lying to their fans about their relationship. After all, their late night rendezvous, foreign trips together and secret vanity van meets are more  than proofs of a roaring affair.