The content in episode 2 of the novel might involve further development of the main characters' relationships or new plot twists. But it really depends on the author's imagination and the overall story arc.
In episode 2 of the novel, there could be more depth to the story's conflicts, maybe some revelations about characters' pasts. It's hard to say exactly without reading it, but it usually builds on what was established in episode 1.
Episode 2 of the Do Dil Ek Jaan novel could feature exciting new adventures for the characters, perhaps some unexpected turns of events. The author might introduce new characters or expand on existing ones' personalities. You'll have to read it to find out for sure!