I met my JW wife when she got tired of the 'truth' and decided to 'go out in the world' for a mate. She and I are compatible in many ways except one, religion. Six years into the marriage and one child later, she decided to return to the religion. She's torn. Deep down inside she wants to lead a 'normal' life. One that does not require her to eschew holiday celebrations as bad, but that darn religion of hers would not have it any other way. She would not accept another church's religious teachings on God and the Bible because to her the witnesses are the 'closest to the truth.' She does not permit herself the luxury to think for herself, that's bad and of the devil. She'd rather let the Watchtower Society do all the deep thinking for her, they are chosen by God and gosh darn it, they are the most researched people she's ever known (she says without attempting to verify this claim on her own). Hence my dilima.
I've advised her sister (who is now 'playing the field' in the 'world') and I should've done the same thing for one of her cousins who is doing the same thing. If you are going to be a witness, be a witness. Find a witness to be your partner, stay in the witness religion, stay out of the world. Trust me, most 'worldlies' do not want your religion taking over their lives. If you want your religion, then have your religion but if you marry a 'worldly' expect to do a lot of it alone or maybe with one or more of your kids, but never as a family even if the 'worldly' tags along. Some 'worldlies' may become witnesses, MOST WILL NOT and you are not doing them any favors allowing your religion to interfere with their lives and their (and your) kids lives.
For you, what do you want? If you want to be with this man, think of the implications of what his religion will do to you and your future kids. No holidays, no birthdays, unless you plan everything (and I mean everything). No holiday shopping with your honey buying Christmas gifts for the kiddos, no taking your honey with you to any holiday parties, and supporting him means having to endure hours of boring talks telling people how cheering for your favorite sports team is a mark of the beast.
Do you want this for yourself and your kids? He is not going to change unless he wants to change, it is not your responsibility to fix him.