I feel that all of the points OF brought up have nothing to do with whether the couple is "gay" or not. Those same issues come to play with "straight" couples now. I would think you would handle these situations just as you would with any couple going through a divorce. With the children... legal adoption is a good solution to rights to the child that may not biologially be yours, but is in every other aspect.
Just my 2 cents

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If you won't listen to reason, there's always... Towanda!... Kathy Bates~Fried Green Tomatoes