I wonder about that shit like in FL though, once you are together 4 or 5 years you are 'legally' married in FL or some shit like that I wonder how it would go down if they were to break up could she claim for half the crib.
WRONG.
Common law doesn't exist in FL. If there was no legal marriage documented then she wouldn't get half the crib if her name isn't on it.
Common law marriage is recognized only in the following states:
Alabama
Colorado
District of Columbia
Georgia (if created before 1/1/97)
Idaho (if created before 1/1/96)
Iowa
Kansas
Montana
New Hampshire (for inheritance purposes only)
Ohio (if created before 10/10/91)
Oklahoma
Pennsylvania (if created before 1/1/05)
Rhode Island
South Carolina
Texas
Utah
In addition to this even though these states "recognize" it, it has to be proven in fron of a Judge. This can be done easily if you both co-mingle funds and ownerships. If you don't co-mingle then it is easy for you to say you never recognized your co-habitation as a marriage.
Common Requirements:
Common-law marriages are not licensed by government authorities, although they may be recorded in the public records of some governmental entities.
Common-law marriages are not solemnized.
Cohabitation alone does not create a common-law marriage; the couple must hold themselves out to the world as husband and wife(must use same last name); and
There must be
mutual consent of the parties to the relationship constituting a marriage
Both parties must be of legal age to enter into a marriage or have parental consent to marry
In some jurisdictions, a couple must have cohabited and held themselves out to the world as husband and wife for a minimum length of time for the marriage to be recognised as valid