Disclaimer: Still not mine.
First Encounter
The compartment that they found already had two occupants who gave them a glance before going back to their conversation.
"You'd better be in Slytherin," he said, hoping beyond hope that she would choose to be with him. And then he heard the boy in the spectacles speak, and it seemed that he wouldn't have to hope.
If that prat made it into Gryffindor, then Lily would definitely choose Slytherin just to spite him! But then that other boy's parting shot, "See ya, Snivellus," would stay with him for a long time, he just knew it.