SHAH RUKH KHAN thinks he’s sex. ‘‘If you tell me that only sex and SRK sell at the box office, that effectively means only SRK sells,’’ he says. Yash Chopra’s Veer-Zaara proves this yet again. Khan’s take on the pilot-turned-prisoner is vintage SRK. ‘‘Now that I have played an old man in this film, do you think they’ll finally say I attempted something different?’’ he drawls.He demystifies the hit formula. Rule 1: WORK WITH FRIENDSHypothesis: I work best with friends.Deconstruct It: Khan didn’t even listen to the story of Veer-Zaara. ‘‘I had shot for half the film when one day in Manali, Adi (Aditya Chopra) said ‘Yaar ab toh story sun le’. I trust my pals implicitly.’’ He formed a similar bond with Ashutosh Gowariker during the making of Swades. ‘‘To think my friends make films as a personal favour to me is to belittle me as well as their craft.’’ Rule 2: ROMANCE IT ALL, EVEN THE PILLARHypothesis: I sizzle with everyone.Deconstruct It: Kajol, Madhuri Dixit, Juhi Chawla, Rani Mukerji, Sushmita Sen or Preity Zinta. Khan is so confident about his ‘best lover’ reputation that he declares he can even romance the inanimate. ‘‘I can romance all the pillars in the world in different ways—geeky, passionate, intense or sad.’’ In real life, he doesn’t take the formula seriously. ‘‘Love is not a property for candlelit dinners, it’s about making a girl smile.’’ Rule 3: RUN SRK RUNHypothesis: Whether it’s on the streets of Manhattan (Kal Ho Naa Ho) or across a roof (Main Hoon Na), I can run anywhere.Deconstruct It: ‘‘Yeah, they all make me run. I think because that makes the film run,’’ he chuckles. And no, he doesn’t give a damn about his bad back. ‘‘I can’t keep telling people that my back is fine or rather, this is as good as it gets. And for those who think I emote pain better after my trouble, I want to tell them that arre, sometimes I can act well.’’