I need some advice and tough love

I'm a baptist and I really like this other guy and his family are hardcore liberals and atheists. He invited me to dinner but he told me to take off my cross necklace because he doesn't want his family

Knowing. Please don't tell me that I don't wanna be with a guy like that or to leave him. Because I don't wanna do that. After he said that he instantly knew it was wrong and apologized. I invited him to go to church with me and he told me that he will consider it, and that turned into him deciding that we would go. I just need some advice. Not about him but mostly about his family. Thank you everyone. God bless