Their "relationship" hadn't always been like this. It wasn't even really a relationship to them at this moment, more like a sick and twisted game they both got an adrenaline rush from.
A euphoric high.
They had been friends before all this. Not extremely close ones, but definitely friends. They shared multiple classes together throughout their high school years and even were table-mates in their current chemistry class.
Neither of them could really pinpoint when things... changed. When the feelings mutated from a simple friendship, to lust.
That was all this was
Lust
Right...?