John Mayer is coming to ex Jessica Simpson's defense after Dallas Cowboys fans have accused her of jinxing beau Tony Romo. When Simpson attended the Cowboys' December face-off against the Philadelphia Eagles, Romo played the worst games of his career. Then, Romo was accused of having of mixed-up priorities for joining Simpson on vacation in Mexico rather than practicing the weekend before playoffs. (The Cowboys lost to the New York Giants.) Bt on his blog, Mayer insists Simpson has nothing to do with the team's bad luck: "This isn't a sports blog, and it isn't a publicity stunt. (but have at me if it feels right.) This is about doing what I think is right as a person, in this case speaking my mind. I have never known anyone to have more pride in their home state and their upbringing in it than Jessica Simpson has in Texas. I don't really follow sports, but I have played some of my biggest and best concerts in your state, and having witnessed how dynamic the spirit there is, I'm betting emotions are running high right about now. All witty barbs, blogs, and fashion policing aside, that girl loves Texas more than you know. It's one of her most defining traits as a person. So please don't try and take that away from her. (You probably wouldn't be able to, but it's less work for all involved.) I just thought it would mean something coming from the guy who has the absolute least to gain from this. And if I'm out of line in having written it, too bad. I can spare a Wednesday's worth of bad press if it means sticking up for a good soul."