The 38-year-old actor has acted in more than 20 Bollywood movies but always turns down kissing scenes because he feels awkward.
Bobby informed he "can't do kissing scenes."
"Although I have said 'no' to them so far, you never know about the future," he said. "My golden rule of living is never say never. That way you don't have to eat your words."
Most Bollywood films didn't show full-blooded kisses till the 1990s. But kissing has become common with a growing number of directors aiming movies at the expanding urban middle class and South Asians overseas.