Farah Khan's husband Shirish Kunder, who earlier this year, made ugly comments on Shah Rukh Khan's Ra.One, now regrets what he said. Shirish apologized to Shah Rukh on twitter, saying,  “I'll always regret one thing that I feel very guilty about. I sincerely apologies for my tweet on Ra.One.”

Shirish has in the past, not been in the good books of his wife Farah's close friend, Shah Rukh Khan. At the success party of Agneepath, organized by Sanjay Dutt at a popular night club in Juhu, Shirish and Shah Rukh who where invited to the party, had a scrape, over some ugly comment made by the former. Apparently it was Sanjay Dutt and Baba Dewan, who intervened and separated them during their fight. However, Shirish who spoke to the media right after that incident, said he was not prepared for this kind of an attack.

Recently when his wife Farah Khan, was promoting her new film, Shirin Farhad Ki to Nikal Padi, reporters asked her about the speculations of SRK’s involvement in promoting her husband's film, Joker. A miffed Farah said, "Where have you seen Shahrukh Khan promoting the film? Has he come on any channel to promote it? He just took one picture with the aliens. Please don't spread nonsense.”

Shirish Kunder's film Joker, starring Akshay Kumar and Sonakshi Sinha, is set to release on August 31.