I've had this case several times. Besides the affidavit, did you file joint tax returns, did she use your last name, etc. Did you and she go out and tell people you were married, or refer to each other in public as husband and wife? All these things help prove a common law marriage (the tax return is a non-disputable method of proof because tax returns are filed under affirmation of the truth and lying is a federal offense. Colorado accepts the return as proof of common law marriage.
The best bet is to find a good lawyer who provides advice on this kind of issue on a regular basis and review your specific facts; the lawyer will be able to give you an analysis of the law and your options.
By the way, some attorneys sell "unbundled" or "limited" legal services where you pay for just what you need and can afford. Like just purchasing the pleadings and a review instead of a lawyer in court. Neighborhood Law Office is such a firm.
Jim Underhill
Neighborhood Law Office
7225 E. Hampden, Unit C
Denver, CO 80224
303-302-1000
[email protected]
www.NeighborhoodLawOffice.com