Concentrate in studying

It is just so horrible. I was so adamant that I have to breakup. Now that I have done it, I am crying my brains out. And there weren't even any response from him. I am so disappointed and unhappy. I probably brought it on myself, but i know I can't take having no reply and no response. I can't be in a relationship like that.

Now I can't think, I can't do my work.