So we aren't actually married but have lived together for 11 years and have a child and have children from previous relationships. My previous relationship ended after our baby was born and my partners aggressive and addictive behaviour led to him being violent. That was a good reason. This time though I just don't know, I'm not happy, it doesn't feel right, it's affecting our daughter, we've had therapy in the past. But it's a huge thing, a massive change, how do i know for sure? How did you know?