Disclaimer: I do not own Glee.
A/N: This sounded smarter in my head. Whatever. Enjoy!
Simple Math: The ArTina Theory
A quadrangle. A four-sided shape. Puck, Quinn, Finn and Rachel. Quinn and Finn were dating, but Rachel really likes Finn, and Puck likes Quinn a lot too. Even Rachel and Puck dated. Simple, right? So here's where it gets complicated. Seems like Kurt has a crush on Finn, and it became more like a pentagon. And Santana has sex with Puck, like all the time. She's been linked to Matt and Brittany, who dated Mike. Puck dated Mercedes too. Of the New Directions twelve, only two members were not involved in this...shape: Artie and Tina. And that, my friends, is why they are so amazing.