About to tell my boyfriend about my ADHD and Depression. (PLEASE HELP)

I'm gonna do it. I'm going to tell my boyfriend about my ADHD and depression, and praying to god he still is going to like me the same. I'm terrified. I don't want him to leave, then what do I do? I don't want him to treat me any different either, I like the way we are now.
I'm so scared and I just need to let it out, and get some advice. I'm shaking with fear right now. Please help me. What do I do if he leaves me? What do I do if he stays and treats me different? I don't know. PLEASE HELP ME!