Get some photocopies of old WTS literature, the ones predicting ooh-
1914 will see the END of the Great Tribulation, that by 1917 the members of the churches will "be slaughtered in thier millions" , that "we may confidently expect that 1925 will see the resurrection of Abraham Isaac Jacob and the prophets of old" , that (p 35 of "Life Everlasting in the Freedom of the Sons of God") Christs millennial reign will end in 2975 (so when must Armageddy come for this to be true?) That the end will come within months of Pearl harbour.
Ask him in view of the scripture about false prophets in Deut, why does he still believe this stuff?
But like Cupid - love is blind. for now you WANT ONLY HIM. nature's way is to let things turn sour after the babies are made.
HB