wow, how many things they have to think about, that we take for granted. As far as dating and marriage - this is a hard one full of questions. Do they marry one or two husbands? As different as they are and their desire to be individual, I would think they would want to choose their own husband. They may share the same genetics and sahre the same body, but the mind is still unique. However, one thing that I haven't heard anyone else mention.. is ok.. suppose they marry seperate husbands... how many guys are going to want to share the one set of reproductive organs, if you know what I mean. The two men would have to trust the other.. you know.. one would be mad if the other slept around and got something nasty and brought it back home. Plus, pleasing two men sexually is going to be harder on the body and more time consuming.
This situation challenges several legal and moral ideas. I personally would not judge these girls for whatever choice they make, because it is up to them to figure out how to get what they want out of life.