Re: Should I tell my son I am not his biological father?
Here's all I can offer. In 1984 my friend was told by his parents he was adopted. He was 18, in his last year of high school. He talked to us about it. He was confused. We were little help, just kids ourselves, looking back, we didn't really understand.
He went to meet his birth parents. He told us about them. But in the end, he told us he felt more for his adopted mom and dad that raised him. And that he understood the reason for the adoption. He didn't want to discuss the subject after that and we viewed his mom and dad the same as we always did.
So, I don't know if it is better to tell from the beginning, or to wait. My friend seemed to struggle for a time with it before he found peace. So if it were up to me, I would inform the child from the beginning. But that ship has sailed for you. Tell the child now. Explain how you feel about him. You know he loves you as a father. If he becomes angry, he will forgive.