I know you are hurting so much right now but he can't always reinforce this pattern. Are you hoping that if you text him enough that he will feel bad? That he will feel guilty for hurting you? If he always responds when you spiral out of control like this, then it just encourages you to spiral out of control until he responds- vicious circle

I hope I don't hurt or offend you, that is not my intent at all. I can tell how much you are suffering and I honestly only want to help.