In my opinion, the most intriguing aspect about the Jefferson/Hemings relationship is that he did not manumit (free) all of his children by her, and that she had to buy their manumission after his death.
The most intriguing aspect of Jefferson and Hemings' relationship is the power dynamic and the complexities surrounding consent. As a slave, Hemings did not have the ability to freely give or withhold her consent, and it raises questions about the nature of their relationship. The fact that Hemings bore children who were genetically proven to be Jefferson's offspring adds another layer of intrigue and raises questions about their personal dynamics.