Stephen Puth knows that the most powerful, heartfelt songs in pop-music history are about love. A singer, songwriter, and musician, Puth also writes songs that traffick in affairs of the heart. But rather than complain about what goes wrong in relationships, the New Jersey native zeroes in on the small, random moments that can become saturated in one’s memory. Puth took the BUILD stage to tell us about his new single, "Look Away."