Ah, just a simple fanfic of Professor HP Snape...
The heroine is reborn through time travel. She is not a noob, not a lolita, not Mary Su, not Tian Lei Gungun. She likes to live her own life quietly. As for the attributes of a professor... I will try my best not to be too OOC.
What does love look like? Some are vigorous, some will not marry anyone who is not your wife, some are entangled in life and death, well, there are also some like in this article... Clean and simple
Do you need a reason to be together? It doesn't seem necessary, I just like being with you.