Sometimes it’s the little things that leave a big mark. In this case, it was a puppy just doing puppy things. It just so happened, that this particular puppy thing really came through for his recently heartbroken human mom. This Redditor starts her journey with a breakup. She and her boyfriend had been living together, but then after the boyfriend’s red flags kept becoming more and more glaringly obvious, she knew the relationship was coming to an end. It was officially over when she found out that he was cheating on her. She packed up her things and moved back into her mom’s. Her mom is allergic to dogs, so she had to, unfortunately, leave her pup at her ex’s place until she could find her own place. One day, when she went to pick up some more of her stuff, she found the clothes of the other woman. It was the cleaning lady. The pain in her heart felt even worse for some reason. Fortunately, she walked in to find her puppy already getting started on the revenge. See the full story below! If you need a story with a happier ending, check this one out about a mom with sticky fingers.