Carter was an abominaiton for different reasons.
Was the woman that he had an affair with someone who worked for him...
Yes.
...and was he sexually harassing her...
Unlikely.
...or giving preference to her as a subordinate employee and excluding other employees from the same special treatment and favors?
Very likely.
And you might also ask did he carry on the affair while at work, in his office?
Likely.
So, was Gingrich affair with a subordinate, a much younger subordinate at that.
Yes.
Let me make it clear that my biggest concern with this is that Newt's extremely reckless and self-indulgent behavior gave powerful ammunition to the "everyone does it" crowd, and helped the 'toon slide. And that was very damaging for our country.