Common Law Marriage States
You need to check with a lawyer to get current advice in this regard.
Only eight states allow common law marriages to be formed in them. A few other states allow common law marriages, but only if those marriages were formed before a specific date
However, all 50 states must recognize common law marriage validly created in other states that allow them. So if you formed a common law marriage in a state listed below and then move to another state, your new state will be forced to recognize your marriage as valid.
States That Allow Common Law Marriage
Colorado
Iowa
Kansas
Montana – allowed because not explicitly prohibited by state law
New Hampshire
South Carolina
Texas
Utah
Rhode Island, case law recognizes common law marriages.
Oklahoma’s statute requires couples to get a marriage license; however case law has upheld common law marriages in the state.
Alabama: No common law after Jan. 1, 2017
Florida – but only if formed prior to Jan. 1, 1968
Georgia – but only if formed prior to Jan. 1, 1997
Indiana – but only if formed prior to Jan. 1, 1958
Ohio – but only if formed prior to Oct. 10, 1991
Pennsylvania – but only if formed prior to Jan. 1, 2005
An affidavit of Common Law Marriage is not necessarily valuable.
You asked for (1) an overview of common-law marriage under Connecticut law, including palimony matters and (2) a summary of all states that allow common-law marriage.
SUMMARY
Generally, a common-law marriage is a relationship involving two people who
(1) agree that they are married,
(2) live together, and
(3) present themselves as spouses.
Connecticut law does not recognize common-law marriages. But, a common-law marriage entered into in a state that recognizes such marriages will be recognized in Connecticut if it was valid under the other state’s law.
Connecticut law does not address “palimony” matters (i.e. court-ordered support following the termination of nonmarital relationships).
According to the National Conference of State Legislatures (NCSL), 10 states (Alabama, Colorado, Iowa, Kansas, Montana, New Hampshire, Rhode Island, South Carolina, Texas, and Utah) and the District of Columbia recognize common-law marriages, although some impose certain restrictions. An additional five states (Georgia, Idaho, Ohio, Oklahoma, and Pennsylvania) allow only those established before a certain date to be recognized.