Coming Out Poly

I grew up in a family where fighting, yelling, and crying were so common that I didn't know other people lived another way. My dad has a problem with being verbally abusive and my mom was either utterly disconnected from our world or throwing things. This has made me pretty terrified of confrontation - people speak to me sternly and I break down. That being said, having issues with Killian and Elle or anyone else in our relationship is the last thing I want to go through. I want us to live as a happy, emotionally healthy unit.