I told him today. It went really well. He didn't reject me or tell me I was going to hell. He admitted that he doesn't know a lot about it and didn't really understand it, but he wasn't freaked out. He told me that I could talk about it as much or as little as I wanted, and if it wasn't a problem for me, it wasn't a problem for him.

I'm quite relieved. I appreciate everyone's advice and support. This is a good place to be.