I need help!

I feel like my relationship is falling apart my bf is being weird and not even acknowledging I exist rn and I'm 600 miles away. We were making the whole traveling thing work but this time it's just all gone to hell he was busy yesterday (that's fine) but today he was like gtg bye and then later text my mom as if he wasn't busy and had all the time in the world to help her figure out a drum kit for my brother and now I just feel like even when he does get back and we can talk if I truly open up and tell him I'm upset and I miss him he'll fly off the handle and say I'm the worst bf ever or why don't you leave like everyone else has! It's all just so freaking dramatic at times... I don't know what to do anymore.. help 😫