Dear Prudence I want to move on. Photo illustration by Slate. Photo by Brastock Images/iStock/Getty Images Plus. Dear Prudence is Slate’s advice column. For this edition, Hillary Frey ,  Slate’s editor in chief,   will be filling in as Prudie.  Submit questions here.   (It’s anonymous!) Dear Prudence, I was married to my ex-husband for 10 years, and in that time, he destroyed my finances, mental health, and self-esteem. It took me years to recover. He has since married a minor celebrity from a wealthy family and spends his days travelling the world and living it up on her dime. I am still so angry that he ruined a decade of my life with zero consequences and is now living a dream life with his beautiful, rich, famous wife. How do I get over the injustice of it all and move on with my life? I avoid their social media, and my friends and family know not to tell me anything about them, but I can’t unlearn what I already know.…