I’m not sure if you’re responding to my hypothetical. If you are, I clearly say that the persno committed the offense once. Then stopped. I really don’t see how the person is libel. Repeated advances after being counseled or not counseled yes, that would be sexual harassement.
Here’s the OEEC definition:
https://www.eeoc.gov/laws/types/sexual_harassment.cfm
Either frequency or severity can qualify it as sexual harassment.