The quote: The statute at issue here makes sodomy a crime only if a person engages in deviate sexual intercourse with another individual of the same sex. Tex. Penal Code Ann. §21.06(a) (2003).
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It should prohibit intentionally (deliberately) depositing seminal fluid anywhere but in one's lawful wife's vagina, but it did not.
As for the lesbians, what they do is morally objectionable as well, but has far less impact on public health, and so arguably is a less fit subject for regulation by public policy. I would still oppose valorizing their disorder by fraudulently calling it marriage.
Good luck getting such a law passed. There's not one state legislature anywhere in the U.S. that would pass such a law.