"Frenemies make beautiful music together | Rachel and Santana team up for a spin on “So Emotional” that’s so sensational, I’m not sure why Mr. Schue doesn’t immediately add it to the set list for Nationals. Perhaps just as interesting, though, the new musical alliance leads to two out of the following three things coming true: public displays of affection; class photos hung in each others’ lockers; and eventual accusations of stalking."