Mumbai, Aug 20 (IANS): Former actress Twinkle Khanna, who has emerged as a popular columnist, has been writing for quite some time now and with the launch of her first book "Mrs. Funnybones", her childhood friend and filmmaker Karan Johar admits she isn't the most honest person.

"Twinkle is not the most honest person in the house because it says 'Mrs. Funnybones' by her own admission. She is the self-proclaimed Mrs. Funnybones," filmmaker Karan Johar, who is Twinkle's childhood friend, said at the book launch.

Karan also revealed that Twinkle was "the only girl" he has been madly in love with.

"She has the rare distinction of having that prestigious part in her historic life, that she has made me fall in love with a woman the only time in my life," he added.

"I have to say very few people have scarred my childhood as much as Twinkle has, I have to give her full credit for doing that," said Karan jokingly.

Karan also blamed her, in good homour, for breaking his heart as well.

"And of course, my heart was broken years later when she refused my debut film 'Kuch Kuch Hota Hai'. She proclaims she did me a favour by doing so because she actually went on and helped Rani Mukherjee who finally ended up doing the part," he said.

Speaking about the writer in Twinkle, Karan said there was "no shock or surprise" that she went on to become a popular figure so soon.

"There was no shock or surprise that she went on to become such a popular cult figure on the pop culture writing so soon. In all, she made a huge impact with her columns in DNA and subsequently her book comes out which is worth more than just reading. It's like entertainment unplugged, just like Twinkle Khanna always is," he sad.

Twinkle's debut book "Mrs. Funnybones" finds humour, from a woman's perspective, in the state of women in India.

Present at the launch were eminent Bollywood personalities including husband Akshay Kumar, mother Dimple Kapadia, Karan Johar, Aamir Khan, Sonali Bendre, and Jaya Bachchan.