Depression

I just told my BF I suffer from depression and Suicidal thoughts after we've been together for 2 years. Seriously nobody would ever know because I'm extremely good at masking it until I'm home alone. I told my ex and he left me right away saying how it's too much too handle. Today I told my boyfriend and When I told him, he said he would get books to learn about it but I couldn't help but feel he secretly thinks I'm crazy and he's going to leave me. He said he would be mindful around me but I don't want our relationship to change. He's awesome which is why I trusted to be honest when he asked me.. We were on the topic and I was talking about it. Now I'm freaking out that I told him. I feel like he's going to leave me and now he thinks I'm a burden. I wanted to hear him say that he's there for me. We can get through this. I can always talk to him. That type shit but he didn't. I just felt like I was left standing alone. I'm trying to stop the dark feelings from coming but I just feel them creeping up and trying to fight through.