I see no reason why we have two pages discussing the exact same trope: Lover and Beloved and Sexy Mentor. Since the trope is about a teacher/student dynamic, "Sexy Mentor" is the more descriptive name; I propose we use that and merge the other page into that one.
(Before somebody points out the genders of the people involved, I'll point out that I live in a country where same-sex marriage has been legal for over a decade. The genders of the people involved don't matter.)