When Aryan sees Ria for the first time, Aryan takes off his helmet and throws it, then gets off his bike. We not only see him throw it, we also hear it bouncing around. Right away he begins walking towards Ria. Later on in the same scene, when he goes up to Ria, his helmet has reappeared tucked under his arm.
In the song "Jeena Hai Kis Liye", Sheetal has socks in one shot, but not in the next.
Aryan Trivedi's medical records show his name as Aryan Dev.
When Dr. Ranveer sees a newspaper cutting about Aryan killing his father, he tells it to Ria. Then Aryan lies to Ria about how his father was responsible for his mother's death and she believes him. But when you pause and closely see that newspaper cutting in the film, it says that his own mother lodged a complaint about Aryan killing his father.