I lied to my entire family about why my ex and I broke up, and now everyone thinks I'm the bad guy

Two years ago, my ex and I split after a four-year relationship. To the outside world, we were the perfect couple. What nobody knew was that she had been draining our shared savings on a secret gambling addiction, putting us $20k in the hole. When I finally ended things, she broke down and begged me not to tell her parents or our mutual friends because her family has a history of severe mental health crises. Out of some misplaced sense of protection, I took the fall. I just told everyone "we grew apart" and let her control the narrative. Now, two years later, my own family still treats me like I discarded a sweet girl for no reason, and her friends still ignore me at gatherings. I'm carrying the burden of being the villain in everyone's eyes just to protect a secret that isn't even mine anymore, and I regret protecting her every single day.