I was with my ex husband and had my son and daughter but they weren’t his. He found out and I left him for their real dad. We had a good relationship and we’re good parents but my sons recently found out about his birth and he’s gotten upset with me.

Why does he feel like this and why has he reacted like this? I’m trying to understand how my little boy feels. He’s told our other kids and they all are against me now. How do I fix this and what are the main issues of the situation. Was it his right to know the truth of his birth or not?