Secondly, you need to give him some time and space to calm down. Don't bombard him with frequent phone calls and text messages. This will only further alienate him from you. Instead, you should focus on your own life and give him enough space to think about their relationship.
Third, try to have an open dialogue with him. Don't blame him, but tell him how you feel and think. Ask his thoughts and feelings, so that you can find a solution to the problem together.
Finally, if you really want him back, you need to work hard. This means that you need to make changes in your relations and show that you have recognized your problems. However, we should also remember that it takes time and patience to save a person's heart. Don't expect to solve the problem overnight. The most important thing is to maintain a positive and optimistic attitude and believe in your's relations and future.