I was propositioned by the owner of an important account at work to join this group he’s a member of. It’s obviously important to him, and by inviting me, I think it’s kind of an honor. The thing is, I’m not really interested, and I’m worried about offending him by turning him down.

Has something like this ever happened to you? Whether it’s a religious thing, a cult, a militia, a secret society or a book club, is there a good way to decline without ruining the business relationship?