Does they recognize common law marriage oklahoma if we've been together for 10 years and he commented adultery?

Oklahoma does recognize common law marriage, if established through evidence then you would have the potential protections of going through a divorce just as if you had a ceremonial marriage. A number of factors will be looked at for a judge to find you both had an intent of being married... did you hold yourselves out as being married?  Did you file taxes jointly?  etc. If you can't establish that, other legal protection could come through a law suit for unjust enrichment, breech of contract, etc. I found an interesting website that suggests defenses to saying there is a common law marriage... but it is still up to a judge to say if there is a marriage, which would then provide "Property Division" (assets and liabilities), provision for payment of debts, possible payments in support alimony, etc.  That site is:  https://www.thespruce.com/common-law-marriage-in-oklahoma-2302242 Call an attorney in or near your county to get more specific recommendations.