My mom is a JW and my stepdad non witness- it was hard
It will confuse the kid because being a JW is a serious matter, standards, and commitment. I would advise to learn about it so that you and your bf can compromise on deciding what is best for the child and respect your bf beleifs, vica versa.
I am going to be going through the same thing. My fiance and I are living together and he isn't in the religion but tecnicly neither am I. I'm DF but thinking bout going back in... It will be hard. We are wanting to have kids in the future but I wonder too how it will work. All I know is to make sure you remember who you fell in love with and let that be your strangth! I also remind myself of what my mom went through and hope that maybe before my fiance and i have kids we can work something out!