depression and anxiety

Ok ladies I need help I have major depression and anxiety and it's really putting a strain on my relationship and I'm not sure how to get over it. I was once engaged to an abusive guy and was abused most of my life I was with said guy for three years. Well it's been almost a year with my boyfriend and I'm not sure on where to start to tear down the walls that I built up he has been really good about giving me time to tear down everything. The only thing is my depression and anxiety is making it where he feels like he can't show sadness or anger to me since I go into a panic attack instead of helping him when he needs it. So please any advice will help I'm just so lost and really want to make this work since he is such an amazing guy.