Actor Kartik Aaryan's mother Mala Tiwari revealed she once told 'Pyaar Ka Punchnama' director Luv Ranjan not to cast her son in the movie so he could focus on his studies. "I just asked Luv, 'Son, out of all the people in the world, why would you choose my son?'" she said. Karthik made his debut with 'Pyaar Ka Punchnama'.