The medieval romance between Abelard and Heloise stands out as one of the most famous of all time. A gifted student, she persuaded her guardian to permit her to pursue her studies.
He was the famous priest who came to teach her. As they spent time together in intellectual pursuits, they fell passionately in love. They abused his trust. This medieval romance did not end well.
Abelard’s writing are famous and available on line in many digitized formats.

Peter Abelard and his student, Heloise, engaged in a true-life romance in the 12th-century which was destined to end in tragedy.
Source: A Medieval Love Story