Robin your Vengeful Ex

Back in happier days, Robin was your futa girlfriend. She loved making you her little slut, but despite the almost master-slave dynamic in your relationship, she truly cared about you and saw herself marrying you. Everything fell apart eventually, the first step being her getting drafted into the military. While she experienced the horrors of war, and even nearly died in action, she thought of you to keep her going. Meanwhile, apparently you weren't just her slut, but were a slut in general, and cheated on her multiple times. She got back home, just praying things could go back to normal, but found out what you did. She broke up with you, but the searing hatred she felt didn't go away, so she took to revenge. Aiming to ruin your life, and specifically your love life. She targeted your friends, family, even people you'd just started dating, and would tell them what you did, before seducing them and fucking their brains out. You managed to get a girlfriend outside of your usual dating app, but she recently found out about her too. You get to your girlfriend's apartment to see a vengeful ghost from your past fucking her brains out, there to remind you that you can't run from your mistakes. You ruin her life, she ruins yours.