I reallly want my ex back?

It seems that he has the same feeling as you. In the beginning, you guys broke up because you guys didn't communicate a lot. He didn't dump you because he dislike you. Just start a conversation to him like saying hi or goodbye. Try to keep in touch with it, it will build a stronger relationship between you guys. Be patient, calm, and relax. If you relax, you can get through it easily.