Filmmaker Shirish Kunder has finally put an end to the ongoing animosity between him and superstar Shah Rukh Khan by tweeting a public apology. The editor-turned-director, who is married to Khan’s close friend, choreographer-director Farah Khan, had created a stir last year when he took to Twitter for a pot shot at the superstar’s mega-budget venture RA.One. “I just heard a 150 Cr firework fizzle,” Kunder had tweeted. Kunde apologised in a tweet on Saturday. “I’ll always regret one thing that I feel very guilty about. I sincerely apologise for my tweet on RA.One,” he tweeted. In January, Kunder and Khan were caught in a brawl at actor Sanjay Dutt’s bash. However, the two called a truce. Recently, Khan also got photographed with the aliens used in Kunder’s new film, Joker. This sparked speculation that the actor is helping to promote the film. However, Farah Khan, who was present at an event for her acting debut in Shirin Farhad Ki Toh Nikal Padi, lost her cool when asked if SRK was promoting her husband’s film. “Where have you seen Shah Rukh 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,” she said. Joker, which is due to release in India this week, stars Sonakshi Sinha and Akshay Kumar. Even though Farah Khan was not aware of the tweet, she said she was proud of her husband. “I haven’t read the tweet right now. But I am proud of my husband. It takes a big heart to apologise,” she said.