Philip & Clive Series by M. Jules Aedin

Professor Philip Osbourne is Clive Aldridge’s toughest teacher, but he has a secret: Osbourne is sneaking out to celebrate Hanukkah at the risk of offending his peers. Bolstered by the knowledge that his teacher is actually human, Clive makes an effort to form a friendship that will over the decades grow into much more.

Philip and Clive now share both a home and two secrets: Philip's past and their love. One wintry night, Philip leads Clive back to the thicket where they first came to an understanding, and this time a promise will bind them for decades to come.