So sorry to hear that. My ex is a narcissist and used to bash me on *** or to anyone who would listen to him, my other ex talks bad about me, we do have a kid together and he's currently seeing someone who told my Son to call her "Mom" it upset me, So I can understand what you're feeling, Your ex is being very negative towards you and i can understand that it can be stressful to deal with, if your still talking to the ex you need to sit down and maybe have a conversation with them and tell them these things upset you. I can understand why this would upset you to have a Ex rubbing their new love in your face and making it hard to get along with them, sounds like they may be immature or childish. Hope this helps.