Do I Go Or Stay?...

I made the choice to break it off with a guy who I had been casually dating but been friends with for months prior as well as work with. He wasn’t a bad person, I just feel like maybe I want more than he is able or willing to give right now... and I expressed that to him before I blocked his number. I was so sure of my decision until I got to work and he won’t speak to me, look at me and just slams the door since his office is adjacent to mine... it just makes me 1. Doubt my choice, and 2. Feel like I meant nothing to him at all... I don’t know what to do...