A couple has just gotten engaged during their Ice Bucket Challenge, and the resulting video will warm your heart.  Justin Davidson, 28, got down on one knee behind his longtime girlfriend Shelby Muha, 31, as she was waiting for him to drench her in freezing water.  Just as she’s telling him to get it over with, she looks back, realizes what’s happening, and starts laughing hysterically.  Astonishingly, the two, both teachers in Manhattan, Kansas, still manage to complete the challenge – and are soaking wet when they finally embrace. Click here to see...The Proposal.