My mom and stepdad had a cold war going for years that I was oblivious too. It finally culminated in hearing my Mom scream at him to get his hands off her, I ran down the steps and she just burst into tears in my arms. I'd never seen her like that, never have since. It genuinely blindsided me. He slept on the couch for a year, then they sold the house and I left with her. Never saw him again, he moved to Thailand.