Lee, for all you say you would feel closer if anything, I have to say I side with Simmo. I can't help but feel that this good close loving relationship you have at present couldn't be strengthened by such knowledge, and as such, I would leave alone.
The general concensus is, that a child has the right to know who their biological parent is, surely a parent has the same right ?
I wouldn't want him to know
If I am not the true father, I would not be interested in who actually is