Please don't misunderstand; "I will not share my wife with another man," and "I have decided that I'm no longer willing to live in an open, sexless marriage" can just as soon be ACTIONS, as WORDS.
In fact, they SHOULD be actions.
The forums are littered with people who say "Oh, make no mistake, my wife knows EXACTLY where I stand on the issue!", and I'm like "Um, no she doesn't, because your words say one thing but your actions say another."