I'm not sure I follow you completely. Room mates are not the same as life mates. I've had room mates and never had the need or desire to be considered a legal marriage. Never had the desire for any of the things mentioned previously (ins. etc.). In the other cases you mentioned are you talking adult and adult or adult child. The grand parent could easily be legal gaurdian. They are related by blood so I would imagine that would make inheritence easier.
I really don't care about the sex and prefer not to think about it.
critical of San Francisco, California and Mass. Urges Congress to immediately pass an amendment to the constitution concerning marriage between man and woman.
Bout time.

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