When it comes to country music duos, few can hold a candle to Faith Hill [1] and Tim McGraw [2]. The couple, who recently celebrated their 21st wedding anniversary [3], put their love on full display as they performed their latest single, "The Rest of Our Life [4]," at the CMA Awards [5] on Wednesday night. Aside from showing off their incredible vocals as they harmonized on stage, the two managed to make us melt into a puddle by giving each other heart eyes. Ugh, we can't with these two.