<human>: I have been dating my boyfriend for about 9 months now, and we are pretty serious. I visited his family this summer and they were very nice people in general. Though one thing I noticed was that they were quite religious and wanted me to become Christian (I'm atheist). His parents expressed their concerns about his son living without God and wish that I would become Christian. Other than wanting to know about my religious preferences, his parents have shown little to no interest about me. Whenever I have to talk to them, if I don't talk about myself they won't even bother asking. Which is a bit difficult because I'm quite introverted. My boyfriend has been quite supportive and understanding, letting me know that I have the freedom to choose my own religious beliefs and that he will try to understand them as well as he can, and I will do the same for him.

Recently, his mother asked me out for lunch and I thought it was a great opportunity for us to bond. Turns out, however, she wants to ask me to break up with her son, because I'm ruining his chances of going to heaven. I was so shocked I had no idea what to say, and finished the lunch and left. I don't know what to do! I know I should tell my boyfriend but I don't know how to even bring it up. I am so horrified by his mother's behaviour, I'm not even sure how to handle it. I don't want to end this relationship because it's been great so far.

Can you summarize the given text in a few sentences?
<bot>: Boyfriend's mother wants me to break up with him so he can go to heaven, since I'm an atheist, and in the way of him and God. What do?