Wilson may have even told Kerry and staff that he really had some goods on Bush and his wife could verify everything being that she works on WMD in the CIA. This was verified by Kerry then Kerry hired Wilson. While Wilson was blabbing to the MSM, someone in Kerry's campaign was telling the MSM that everything Wilson said was true because his wife worked on WMD in the CIA.
All roads point to Wilson being the one who blabbed his wife's employment status to anyone he thought could get him a job.
I strongly suspect Wilson told the reporters he was pitching his story to--and the Kerry camp--that his wife was with the CIA WMD section--to enhance his credibility.