I think most people have some degree of bi in them. Just my opinion, of course.
I consider myself bi and so does my wife. We also agree that me being bi is a big part of what makes our lifestyle work.
It's no secret that many men would love to have a bi wife. My wife just happens to feel that way towards me. According to my wife, me sucking her bf's dick is the ultimate act of acceptance I can give to her bf's. If all three of us get some enjoyment, it makes the three-way bond much stronger.