I hope this doesn't come off as too harsh, but I am wondering if maybe right now isn't the best time for you to be in a relationship? I get the feeling that you have a lot of pent up anger and frustration that seems to come out when you are in a relationship. Perhaps it would be better for both you and your guy to simply not be in a relationship. I think you need to try to explore in therapy why you get so upset when a text message is not immediately responded to. I would also suggest journaling and maybe bringing in your journal entries to read and discuss with your therapist. Try to be non-judgmental and defensive when you do this. I get the feeling that you are constantly on the defense about your actions and feelings, and I think if you could try to sit back and look at your emotions like you are a third party to them, not in anyway connected to them, you might be able to get a better handle on them and not let them control you.

I also just want to say that I frequently do not respond to texts. Text messages are short and sweet, "want to get lunch tomorrow?" "sure." I do not stress about whether or not they respond. I don't expect anyone to be glued to their phone. I don't expect everyone to drop what they're doing to cater to my needs, and I certainly wouldn't expect others to feel differently about my text messages to them. You are in charge of your own happiness, sadness, anger, anything. If they get back to you, great! If they don't, don't stress about it. Make other plans. If they do get back to you after that, real friends will understand what happened and not worry about it.