Actor Kartik Aaryan on Friday wished his `Satyaprem Ki Katha` co-star Gajraj Rao on his birthday in Sattu style. Taking to Instagram, Kartik shared a picture of himself and Gajraj Rao. In the picture, Kartik and Gajraj, who played his father in the movie, are seen laughing together. Sharing the photo, he wrote, "Wish you Happy Birthday Sattu ke Puppa (c)gajrajrao. Love you sir."