It's a little cheesy, but a little cute too - Microsoft teamed up with m:united to create a Valentine's Day themed commercial featuring an emotional breakup between a man and Siri. He then continues to boast about his new love. Any guesses on "who" that may be? It may not be the funniest ad we've seen, but it's certainly relevant and nicely timed. You can see Microsoft's other ad, playing off a similar scenario, here.