Ghost Hunters (the show) Question?

I have a question about the show ghost hunters or regarding 2 people from the show. People keep asking me about Dave Tango and Kris Williams. Everyone keeps asking me if they are dating. I keep telling everyone that I don't think it's true and was wondering what would give them that idea. The fact is I don't know if Dave Tango and Kris Williams are dating? I mean, it's possible, but I don't think they are? Does anybody know if Dave Tango and Kris Williams are dating?