Apparently during the scripting stages, Karan Johar‘s Ae Dil Hai Mushkil had a kissing scene between the hero and the older woman he falls in love with. Now that Aishwarya Rai has been cast in this important role, it looks like the kiss will be scraped from the movie. According to a report in DNA, Aishwarya is not comfortable doing intimate scenes post marriage and she conveyed her displeasure to the director. Karan himself didn’t want any awkwardness, so he has agreed to shoot the scene in such a way that it won’t involve an actual kiss, nor will there be any skin-show required by the actress.
Source : http://www.missmalini.com/2015/12/26/aishwarya-rai-refuses-to-kiss-ranbir-kapoor/