Kunal married Naina, the niece of megastar Amitabh Bachchan, in February last year.
"Definition of love has changed after marriage, rather it has grown. I am more in love with my wife than when I was dating her," Kunal told reporters at a promotional event of his upcoming film "Dear Zindagi" here last night.
"Love is something that keeps changing. Love has vast meaning, it is different on different days for different people and different things," he said.
According to the 39-year-old actor, there is no rule book for romance.
Meanwhile, Kunal is busy giving finishing touches to his film "Veeram", a historical drama directed by Jayaraj. It is an adaptation of William Shakespeare's play "Macbeth" and tells the story of Chandu Chekavar (Kunal), an infamous warrior in the 13th century North Malabar.
"Veeram" is simultaneously shot in Malayalam, Hindi and in English with the same title.
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