For the first time, we’ll get to see the talented Kapoor and Saif together in Yash Chopra’s Tashan. Sources present on the location promise, the couple will set the screen ablaze. Their chemistry is incredible, says a unit member. Kareena’s last film Omkara had Saif in it. Sources present on location of the films in which the two have shot together have an interesting story to tell, “During the Chandigarh schedule of LOC, Saif and Kareena (who was not committed to Shahid then) would often hang out together post the shoot. But it was more of discovering a new friendship with both having a lot in common having done their college studies abroad."

"During the one-and-a-half month long shooting stint for Omkara at Wai, the entire unit was stationed at a nearby hill station, Mahableshwar. Madly in love with Rozza then, Saif would have his Italian girlfriend for company during his free time. Kareena too was seen interacting less with him and more with Vivek who was nursing a broken heart following his break up with Ash. Shahid would cover the 6-hour long drive almost every weekend to the location to catch up on lost time between them," adds the source.

"As Saif and Kareena met up again during the first schedule of Tashan in Ladakh one could see Saif deliberately making it a point to be with Kareena as much as he could. She too enjoyed the attention coming in from one of her favourite actors and once good friend. But as the Jaisalmer schedule began, there was definitely something more than what met the eye. They were inseparable. The actress, who would often be found speaking to boyfriend Shahid on her cell phone during her free time, would never be seen doing that here and was instead caught spending time chatting and moving around with Saif. There is something definitely brewing between the two,” feels the source.

But close friends of the couple say that they are too much in love with each other for any such thing to happen. Shahid doesn't have many close buddies in the industry barring his Fool N Final director, Ahmed Khan. But he sounded clueless about the break up and promised to get back to us if he got any update on the matter. One of Bebo's closest pals told us, "As far as I know there is no truth in this news. Kareena has a habit of being very openly affectionate about the person she really cares about and likes. Saif has been a good friend and spending a lot of time together during these long Ladakh and Jaisalmer schedules they both must have attracted unwanted attention from where these rumours about them having a fling must have generated."

Another close friend of the Kareena too sounded surprised about the news doing the rounds. She said, "Bebo is madly in love with Shahid. She can never ruin her relationship over a fling with someone who is known for his non-commitment when it comes to affairs. Shahid has brought in a definite change in her, which has been out there for everyone to see. She knows how hard it is to find true commitment within the industry”.

But insider from the sets of Tashan says “Bebo and Saif are behaving like teenagers in love and are constantly sending each other messages and even have photos of each other on their phone”.

The handsome nawab strikes again seems like Kareena Kapoor has put her three-year-old relationship with Shahid Kapur on line for the super charming Saif. However, Kareena is still a little wary, as Saif is known to be commitment phobic. As for Shahid, he is in Canada shooting for Nagesh Kuknoor's 'Tasveer'. So he is quite clueless about what is happening on the Kareena-Saif front.

The question that arises is how serious is Saif? Ever since he split with Amrita Singh and Rozza, he seems to be just in the mood for some more excitement. Is it a case of exit Bipasha and enter Kareena only time will tell.