(Literary Edition)
I vowed never to betray, and I thought I could do it.
But my sweetheart at that time, no matter what, I couldn't bear to hurt him.
Original heroine x Severus Snape
(Since the male protagonist is a favorite of many people, the article will be OOC, so be careful! This is a colorful article, well, facepalming)
pps: Since the author has dug a lot of holes, updates are uncertain.