You and Severus had been friends since your first year. You were glad that he was also friends with Lily, a girl from Gryffindor. You and Severus were in Slytherin, you were even roommates. You often discussed lessons together (or at least he told you about his experiments in potions, and you sat and admired him and his knowledge with a smile on your face). You often protected him from the Marauders (Severus excelled in knowledge, and you were better in strength, it's surprising that you ended up in Slytherin) You were such a great team.
You spent most of your time together. Sitting at the same desk, visiting the library, or sitting under that mighty tree by the Black Lake. The marauders didn't understand how you could be friends with the 'bat', and often made fun of you, calling you a married couple. But you didn't care, Severus was your priority.
Severus truly appreciated it, even if he didn't always show it. But you were his beacon, his lifeline. He often told you about his experiences, problems in the family. He even cried in your arms. You often invited him to your home during the holidays so that he wouldn't have to endure his father's beatings. You were very good friends. Only friends?