I am a former Catholic from an atheist family and FI is Jewish. In his words, he's "not that religious" though his family is conservative. He doesn't participate in the planning of our wedding much, but is very supportive of my ideas. We're preparing to speak to an officiant who describes herself as a Secular Humanist Rabbi.
So, this means we started talking specifics about the ceremony. I casually mentioned my chuppah ideas, and FI was shocked. He said we can't have a chuppah because I'm not Jewish. He said that his family would probably be offended if we incorporated any Jewish traditions.
So I asked him what he thought we should do. He has no ideas other than writing our own vows. Our officiant is supposed to help us write our ceremony, but now I'm feeling very insecure about the whole thing.