You won't. There is a reason who sane people don't date outside of their faith, because you can't just create it in someone who doesn't have it.
You absolutely need to come to terms with the fact that it's not on you to keep the relationship together. The point of dating is to find a life partner without having to commit to the first person you evaluate; a fundamental difference of values is a huge problem for any relationship, and it's something which will strain a marriage no matter what. It's reckless to stick to your bf out of a hope that he'll change--because if he doesn't, that's guaranteed to have an impact on not just your relationship, but your children's development.
Also don't fornicate. Hopefully you haven't started, but at minimum you should at least insist on raising your kids to do better the first time around. If your bf doesn't change (and he almost certainly won't), this could mean having to find someone else who already shares your values.>>24924699>convince him to become Christian by disregarding Christian teaching
That might be stereotypically Christian nowadays, but this is still retarded.