These days, it seems like a guy can't even ask a girl to marry him unless his proposal is primed to go viral. Every day sees a new flurry of proposal videos on YouTube of guys who manage to train an entire litter of kittens to sing "Call Me Maybe" on Tumblr to get the girl of his dreams to say "yes." And it sort of seems like half of these proposals are more about someone getting to put on a play instead of someone embarking on a new life of love and commitment. Yet, you can't help but have your heart warmed by the antics. And few are as heartwarming (or as complicated-looking. How many days did these guys have to practice?) as this video that gives anyone thinking of tying the knot a whole new bar. Congratulations, you two ...