Unlikely (Severus Snape x Student Reader)

(Y/n) (Y/l/n). A 5th year Hogwarts student. 16 years old. A Gryffindor and a muggle-born. Very kind, very nice, and very very lonely.
Severus Snape. A Hogwarts teacher. The Potions Master. Head of Slytherin house. Mean, grouchy, slimy...and the one that everyone loves to hate.

A couple years back, during (Y/n) (Y/l/n)'s 3rd year, she actually grown to like Professor Snape. She began attempting civil conversations with him after class. At first to no avail, but the astute Professor soon realized she wasn't going to give up, so he gave in. He soon grew fond of the girl, and something, most unlikely occurred...they became friends. Or at least, (Y/n) felt they did. Snape on the other hand...never seemed to understand.

Now, with (Y/n) maturing (and of age), and Severus oblivious to feelings, would there friendship continue? Or would something...more happen between them?