I'm Not Ready to Move On? Please Help?

I broke up with my boyfriend on Monday and since then I have been left feeling so miserable. I feel like I was the one who messed up. I broke up with him because he wouldn't want to see me that often like maybe every 3 to 4 weeks we would see each other. Also in between that time we didn't talk often because he would ignore me a lot so I umed that he wasn't interested in me. But rather talking about it I got so heated up that I called and left a voice mail saying I wanted to break up. So I made a hug mistake but since then he wants nothing to do with me. I tried calling and texting him about how sorry I was for breaking up. I poured a lot of my emotions out about how I really felt. He still ignored a lot of it till a friend told him that I was hanging out with some dude (which was my gay best friend). Even then it still made him angry and sent this text: "Omg ur such a child yes im interested in u.Going out with a guy a couple of days after we break up makes u a inconsiderate . :( im sorry that u felt the need to break up with me i was enjoying our relationship. Since im not a teenager anymore i don't want to play these games i just want to remind you that i said that we should stay friends because putting a label on us would ruin it and yes in fact it did. So if you don't want to talk anymore ok goodbye and dont text ever again." That was his text I got from him and what by reminding me to just be friends he ment that we should have stayed in a fwb relationship..Anyway I of course sent something else after explaining who the guy was and how sorry I was again. He told me that I was crazy and to stop texting him...So now I really am upset and I'm confused as to what I should do now. I feel like I'm not ready to move on but I know that I should. So what should I do? how do I move on?