Farhan Akhtar and Deepika Padukone are the latest BFF (best friends forever) of B-Town. It is learnt that they have been bonding big time on the sets of their upcoming film together, Karthik Calling Kathik.

A source reveals, "Ever since Deepika Padukone has begun shooting with the Rock On star, she and Farhan have clicked big time on the sets.

She has always been in awe of his films be it Dil Chahata Hai, Lakshya or Don, and she just can't stop gushing about him. Whether it's his acting abilities or his directorial instincts, Deepika is simply impressed. On the other hand Farhan likes Deepika's professional attitude.

By the way Deepika is excited about her role in their thriller together Karthik Calling Karthik. Unlike her roles in Om Shanti Om and Bachna Ae Haseeno Deepika for the first time will be essaying a de-glam role in the movie.

She says it's a role, which she has performed for the first time. Describing her role as a challenging one Deepika says, "The character is far different from what I am. The film is not at all glamorous. It's not about clothes, make up or songs and dances. It's purely about performance."