welcome to the forum,
If you are asking for some advice; I would wager to say that you should "move on" in the boyfriend department. Do not look back.
My concern is not so much that he is a JW; but that he has a family; kids. Forgive my blunt comment ;but he is OBVIOUSLY not giving them up for you.
The religion did not stop him from seeing you in the first place and concealing his status. So I would conclude that the religion, in this case , is being used as an excuse.
"Bakers Act" ? Never heard of it; but again this does not sound like anything you would want to get yourself entangled with
Do not concern yourself about his friendship; he is a big boy and is capable of taking care of himself.
For your own welfare; find someone else to befriend.