Sexuality for some folks just happens to be more of a private than a public discussion topic. Many folks in the Lifestyle are more open within our own communities, but not everyone wants to chat beyond the single partner they're sharing their bed with. Many folks also don't care for labels such as Dom, sub, or BDSM - perhaps they have a skewed idea of what BDSM means, or just consider themselves a little on the kinky side as opposed to committing to something as all encompassing as a "Lifestyle." I'm not so sure his reluctance to go public (even if it's only public within the community) is a sign he's closed-minded or lacks initiative, perhaps he just prefers to keep things between the two of you.

There are plenty of online sites that explain simple to more intricate rope bondage, some with video tutorials, and other "read only" instructions for activities that just the two of you can look at. Not everyone wants their bedroom business to be a community affair, but perhaps those activities will warm him up to at least being comfortable with asking questions and doing some more extensive research on the topic with other folks in the know.