I don't do a lot of "plugging" for bloggers, but I think this one by Greg Boyd is definitely worth your time. My friend, Joel, turned me on to it in a comment about my recent posts on marriage. After navigating to the site and reading his post on marriage, I found myself drawn to read the others on sex. Boyd has some very interesting, thoughtful, and relevant things to say about marriage, sex, and American licentiousness. I would highly recommend you have a look.
P.S. Boyd is very eloquent and thoughtful with his language, but he is very frank about some things. Delicate sensibilities need not apply.