You have nailed it! However, I would change your sentence to read: it has everything to do with Hillary Clinton and the fact that Bill chose Monica over Hillary. That is the central issue that needs to be diffused by the Clinton Apparatchiks.
The Clintons clearly have an “arrangement” in their marriage where they both get to do whoever they want, and there’s no issue so long as it doesn’t become public. And even when it does, it gets treated by them as a political betrayal rather than an emotional or moral one.
Consider how Lewinsky apparantly had a meltdown outside the White House when she was denied access because Bill was in a “private meeting” with Eleanor Mondale. Bill clearly had a revolving door with a long line outside of it.
From a psychological standpoint, both are very needy women. Monica is just pathetic; most women in her position would have moved on years ago, but it's clear she still loves the misogynist-in-chief and believes that under the right circumstances, she could still have a relationship with him. Hillary's psychosis is downright scary; a woman who has been repeatedly embarrassed and humiliated by her husband not only stays with him, she aspires to the highest office in the land. I don't know if that's some form of compensation, or another means of coping, but Hillary is just as screwed up as Monica, thanks to the President that feminists adore.