I think you are on the wrong website to be quoting he bible ?

I thought it was a prostitute they were going after.
And if that’s the case, why not not the Toms.
Still stands to this day.

For the same reason that Hermey the Elf is practicing dentistry instead of building Santa's toys... both are fiction.

In other news, the Bible was written and edited by men who were a wee bit misogynistic.

Given the excessive misogyny found in almost all religions and Christianity in particular, for the life of me I never understood why any women would go along with it

That pericope to which you refer is not found in many of the manuscripts and, when it does appears in wildly different places. So there's a lot of textual doubt about it.
Putting that to 1 side, no one knows why she cheated. There is no information provided to tell us, for it's not germane to the author's aim.
The man under Torah would have been punished. He may not have been married. However, this pericope focusses on her so as to make the point that those doing the stoning are hypocrites.

The whole pericope is a moral tale about hypocrisy but it's probably a fictitious tale

The story is a very late addition to the bible, possibly only added in the middle ages, and even if the bible is not total fiction, this story almost certainly is. And in any case the woman is not the point of the story but only exists to show up the falsehood of her accusers, it would work just as well if she were a man or a thief or a murderer the details are trivial.

There is a very common hypothesis among historians that most of the more liberal of the Jesus teachings are the later additions, and that the hard line old testament preachings were the only ones in the earliest lost copies.

Believing in Jesus is like believing in Popeye the Sailor.

Why would you punish the man? Was he in another relationship and cheating as well? Did he know she was in a relationship? Not enough info. I don’t get it.

There is a third question. Who gives a shit?

It doesn't matter. The point is that everyone had sinned so no one was qualified to stone her.

Garbage book, trash ideas!

Right after Jesus said that a meteor crashed into the ground leaving a smoking crater where the woman stood. Jesus looks to the sky, exasperated and says," Thanks Dad, I was trying to make a point."

Nobody wonders why he didn't just insist NOBODY should be throwing stones? By leaving the criteria open to personal subjective interpretation, he's still endorsing a situation in which it's ok to throw stones. Typical religious hypocrite. Violence is still an acceptable solution when and if I determine it is.

Because Christianity

Society progresses; Religion doesn't.

He was a republican so was the judge

I think you may have conflated a few different verses into a single incident. Besides, what does it matter? Religious stuff doesn't have to make sense, right?

One note on that saying.
That was not in the older versions of the NT, it was added in the first King James Bible.
Actually, so were a lot of other quotes. and stories.

Why did she cheat? Do you seriously want us to speculate on something we can't possibly know? There are a million different scenarios that could have been the case if this even really happened. It could have been justified or not but is this even relevant?
Why didn't the man get punished? Maybe he did. The old testament says that both should get killed. But maybe there is also some sexism involved in this scenario, it's not like bible has a shortage of that.

In many countries, women are still punished for adultery even if they are raped.
I have read one version of the story that the woman had a forced marriage and had been 'unfaithful' with her original lover.

The mythical Jesus figure cheated when he, as an immortal god, offered to sacrifice his life for whatever. The basic premise of the religion is a lie.

And after the first three rocks were thrown, Jesus said, "Let me rephrase that"!

Always liked that story. It's one of those that really illustrates the fairy tale quality of the bible, even without the magic parts.
An angry mob of self-righteous religious men, and not one of them believed he was without sin?

To answer your second question: Some men hate women and will take any chance to "legitimately" punish one.

Why did she cheat? Who knows? The man she cheated with is not considered wrong in any way because it is a man's world both then and now. If this was a real situation at all maybe Jesus found her attractive and wanted her for himself. Who knows?

It's a book that is supposed to be filed in the fiction aisle. The writers could make the story go any way they wanted it to go.
Asking why something in the bible happened is the same as asking why something happened in Game Of Thrones.
A ridiculous question.