You were right in telling your boyfriend how he hurts you in the relationship. As a result, your boyfriend ends the relationship. He figured it out it's better to end the relationship than continuing hurting you. After the break up, you tell him how much you love him and how he has been unfair to you including breaking up with you. He says he is gonna think about it. It hurts you the more.
If your boyfriend hasn't changed, it will make no difference in the relationship. He is going to hurt you the more when you reunite. He has not indicated he's going to change so that when you get together he won't do or say things that will hurt you. He has said he's gonna think about it which questions his feelings and love for you. He seems comfortable with the idea of ending the relationship after telling him how he hurts you.
You have to cease any communication with him. It is difficult but it's the right thing to do. You have to heal and recover from the break-up. Also, during the no contact, you will reflect on the failed relationship and your ex (both on the positive and negative side). This is the right step to take although it will be very painful. You need to know whether it's a wise step to try to get him back or to move on with your life. You can do so when you do not contact him.
I have written an article on the No Contact Rule. It's titled: 'What Are the Rules and Benefits of the No Contact Rule After a Breakup?'
Also, another article about healing and recovering from a breakup titled 'Steps to Healing and Recovery After a Breakup.'