The state of Colorado also recognizes common law marriages. While many people misunderstand what this type of marriage is, it’s relatively simple. A common law marriage is not one due to the time a couple resides together.
Instead, a marriage is a common law marriage if:
The couple acts as if they are married
The couple displays their relationship to others as a marriage
If two spouses are in a common law marriage, they still need to file a Petition for the Dissolution of Marriage in order to end their marriage.