Our expert says:
See the folks at the Maintenance Court ( usually at your nearest magistrate's Court ) as this guy is surely liable to pay maintenance for your son, and should be man enough to make contact with the boy - for the child's sake. Maybe he's lying low to hide the fact of this affir from his wife ? After all, you know he lied to you.
"not yet time" is nonsense and no excuse whatever.
As qwerty says, legally he court can force him to pay maintenance for the child, and that should be done. It can't force him to spend time with the child, though it would not. I think, accept any attempt on his side to prevent the boy from contacting his grandparents, IF they were willing to see him ( I wonder whether they even know this grandson exists ? )
As qwerty also usefully says, there's no real advantage to your son in meeting a biological father who is a creep and who doesn't really want to know him.
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