Preity Zinta with Hrithik Roshan. (courtesy: realpz)New Delhi: Preity Zinta and Hrithik Roshan’s chemistry is what cinematic dreams are made of. But their effortless friendship is not just limited to the professional sphere. Off-screen too, the two actors enjoy a warm bond that has stood the test of time. We saw a glimpse of this – and a rather heartwarming one at that – on Preity Zinta’s Instagram timeline. The actress posted a selfie with Hrithik Roshan and her brother Deepankar Zinta taken on a flight. In a note attached to the image, Preity said that her Koi… Mil Gaya co-star stepped up and helped with her twins on the long flight. Thanking Hrithik profusely for helping take care of Jai and Gia, Preity added that Hrithik had made it obvious that he is an “amazing and thoughtful father”.In the caption, Preity Zinta said, “Many people will walk in and out of your life, but only true friends leave footprints in your heart. Thank you so much Hrithik Roshan for going out of your way and helping out with Jai and Gia on such a long flight. Now I see why you are such an amazing and thoughtful father. I love you the mostest.”Acknowledging their journey as friends over the years, Preity Zinta said, “From hanging out as kids to having kids, I really am proud to see how far we have come and grown together.” Preity Zinta’s friend and blogger Shagun Khanna wrote in the comments section: “Aww, Jai and Gia’s first trip to India.”Earlier this year on the occasion of Hrithik Roshan’s birthday, Preity Zinta shared an epic throwback picture. In the photo, Hrithik’s funny hairstyle has Preity Zinta in splits. In the caption, Preity Zinta wrote, “Happy birthday my darling Hrithik Roshan. Sorry had to post this photo because it always makes me laugh and think of our fun and mad times together. Always wanna see you smile n shine today, tomorrow and always. Love you loads.”Preity Zinta and Hrithik Roshan have worked together in movies such as Lakshya, Mission Kashmir and Koi… Mil Gaya.Preity Zinta got married to Gene Goodenough in Los Angeles in 2016. The couple welcomed their twins via surrogacy in November last year.