As a newcomer and outsider to the JW religion, I'm nervous to post and don't want to offend anyone. I'm working out my 'stuff' from my relationship with a JW. One thing that stuck for me was my father's comment (who's wise and non-judgemental) -- he said "you can't change people, you need to accept them for who they are." He was concerned about my relationship as our beliefs were so different.
I wonder if you might be putting more energy into trying to change your BF's beliefs, than accepting where the two of you are and moving forward. (I did that a bit, so no offense meant.) And while his beliefs may explain unacceptable behaviour, such as keeping you a secret, I wonder where your beliefs and values fit into this? What do YOU think is right? Based on your own values and beliefs - are you OK with this? What do you want in a life partner? How do you envision your future?
I can understand trying to save a marriage and famliy facing these issues, but you are not that far committed yet. Are you OK with marrying a fully committed JW? If you and he, are both OK with him being a JW and you never being one, as it sounds like joining is not an option for you, then fine. If not, then perhaps you're both trying to change someone. This might be starting point for your next conversation...Life is short - maybe just cut to the chase... what do you want? Do you want him out? Does he want out? Based on those answers, how do you move forward...
Peace