Ram often tries to save Sidharth. So Sidharth really likes his stepfather. But again he understands that Ram is not his father. He also knows that this didi(older sister) doesn't like his mom, him, and even Raj too. She even fights once with Ram's uncle due to that. So he really wanted to ask this question.
In reality, he is ready to leave Raj and Ram's uncle as his mom left him, he understands that there is no one for him. But again there is no Ram uncle so he needs to protect his little brother. His little brother is his only happiness. When Ram's uncle gives Raj anything Raj always shares it with him. When his mom tries to beat him Ram also started to cry for him. His little brother is the only one he has now.
