Managing anxiety/ depression in a relationship?

So I started seeing a guy recently and I really like him, but I feel like my anxiety is starting to get in the way which is leading to depression. He knows a little bit about my struggles, but every time I tell him something I feel like I’m being a burden or like he won’t like me if he finds out how “crazy” I am. We’re both really busy so I haven’t seen him in over 2 weeks which has been stressful for me. I feel like he’s gotten bored of me or that he found another girl during this time and it’s really been bothering me lately. Ive been told by close friends that I should just talk to him, but I’m not even sure what to say because he hasn’t done anything to make me feel like this and I don’t want to create unnecessary drama. I’m just so frustrated because I want to just enjoy this and not be in a constant state of panic if he doesn’t respond after a few hours. Another thing is that we aren’t defining our relationship right now, so I feel like if he were to be with another girl (which would break my heart) I couldn’t get mad because he’s not my boyfriend. My thoughts have been kind of spiraling out of control and I don’t know what to do. Please help!!