short story - it doesn't have a title

short story I entered for a contest on Trialga.net

She walked by leading him along with an invisible leash. He followed obediently. She'd walk to class and he'd follow as her guard dog and protected her from any possible harm. He was like Cerberus to the gates of Hades's realm and she was his undercover master. As he followed he discarded any possible risks or threats to his belovéd queen and her friends and court jester. Then as he turned around to face her and confirm that no harm would come to her, he saw it. The bearer of his string of life, the thread bounding his life force to this mortal world, is taking the dreadful rusted scissors to it as her lips willingly meet those of another man. Snip. Cerberus has been vanquished with one small snip. Her protector and lover are lost to the infinite zone of Hades and his spiraling sea of souls. His heart ripped to pieces, she with another man. Snip. He's out of her life now. Snip. Cerberus has been taken down by his own belovéd master. Snip.