My ex won't answer me? I'm really worried!?

[Sydney]

Since he doesn't have a phone, I keep up with him on Twitter.
I said last night that maybe we won't work out, & he said he didn't want anyone else. I said I was sorry again & he didn't answer until an hour later ; he was crying & he said he loved me & always will, but he needed to calm down before he said something he regretted.

Right now is the usual time he gets on to talk to me. He hasn't read any of the messages I sent him. He only knows I wanted to break up. I'm really worried, I felt bad he cried over me, but I'm really worried because I don't know what hr has been doing all day, if you understand.

Please help. I don't know what else to think. Should I go back with him, too?