This is talking specifically about men. Leviticus mention both men and women instead of using the word “ man” to mean everyone.
In Romans 1 I think Paul was expressing an “ick” factor concerning the women rather than making a commandment, if you will.
I think the Bible mentions homosexuality about 10 times. In each case it's talking about men having sex with men, save the example you gave, which I don't see as making gay men and lesbians equally repulsive.
I think your example (Romans) mentions lesbians in passing; more as an opinion that as a commandment. “Even their women exchanged natural relations for unnatural ones.” It's an “ick” thing that Paul is expressing, though since it's in the bible, you might probably conclude that it's a divinely inspired ick. But reading it as it's written, it's obvious Paul thinks it's wrong, but not so obvious that this is a fact.
And I think that the first chapter of Romans is the only place where lesbians are mentioned in any way. All the rest are talking about gay men. I could be wrong about that. But man was made in the image of God, and women made in the image of man. That could be why male homosexuality is seen as such an abomination.
The Romans passage clearly lumps “unnatural” relations of women with all those other things that “although they know the ordinance of God, that those who practice such things are worthy of death, they not only do the same, but also give hearty approval to those who practice them.”
Assuming one thinks “ick” is worthy of death, I’d be careful picking my teeth in public (another “ick”) in fear of death by the hand of God.
The biblical male case almost always includes the female case. If it’s wrong for a guy it’s wrong for a girl.
Since sex is ONLY permissable within the bounds of marriage, and since marriage is ONLY between a man and a woman, then any sex other than that between a man and a woman (who are married to each other) is sinful.
Lesbianism is just as bad as homosexuality.