The thing I worry about is the reason that we are together is that I don't want to build my own life. We had our first child about a year into the relationship.
I agree we shouldn't continue if we can't accept each other as we are. They therefore have a high standard to work toward.
As someone born and raised in the church this has been very difficult to moderate and there is some social pressure to become more involved. The best advice I can give is stay true to yourself.
Yes, talk talk talk about everything yoiu can think of, but beyond that I would suggest pre-marital counseling from people knowledgeable in each tradition at play this will probably take two different counselors, who might be faith-based.
It's like talking to a wall.
My seminary teacher went off on me about dating a non Mormon when I was talking about going to his prom. I maintain my own life and embrace my SO with open arms when I do see him, which comes to about once a week usually dinner after 8: I get up with him at 4 A.