post breakup depression

long story short, my boyfriend broke up with me in may and after us trying to be friends I just couldn't because he had already gotten a new girlfriend. I was okay with this and I could deal with it because I was in school and I was distracted all the time, now it's summer, I don't have any friends, and I'm literally alone. I've had depression before and it's pretty on and off but right now it's the worst it's ever been. he was my best friend and he said that we could still be here for each other, but even after trying to talk to him he just says "I'll text you later" or "I'll text you tomorrow", he never did and I can deal with it. I don't really know what to do anymore. can someone just give me advice? I don't know on what but I'm just so upset and I don't know what to do with myself.