Can a Christian or Jehovah witness change religion?

I have a boyfriend we are okay and happy to each other until one day he asked my religion. I said I'm a Christian and he said to me that we can't be together because he's a member of JW and I'm not from his church. I said we can find a way and he trust what I said. My question is can a Christian and unbaptized Jehovah Witness can be marriage? If not can be one of us change religion? In case someone say that I'm crazy because I'm willing to change a religion just for someone. I just believe that it is not in religion when it comes on God it is about your faith and trust in him.