You have hurt your ex boyfriend and now you regret your actions. That can put you in a tough situation, but you can get him to forgive you. If you truly love your man and want a second chance, you will have to convince him you have changed. In order to do that you might have to swallow some pride, but nothing is impossible if you want it bad enough.
How hard it will be and how long it will take to convince your ex boyfriend to forgive you will depend on what you did to hurt him. If it was just a spat and you said some things that were pretty hurtful, he should get over it fast. But if you lied to him or cheated, that will be a whole different ball game and you will have to be very careful not to make things worse.
Although men and women think differently about many things, when they are deeply hurt, they have one thing in common. They want to be alone. Look at it from your own standpoint. If you were the one that had been hurt what would you want your ex to do? You would want him to give you time to get over your anger and heal your wounds. Your ex boyfriend will need you to give him the same consideration.
That will be a good way to start showing your ex you respect his feelings. But to convince him you have changed you will need to start making those changes immediately. If you hurt him by throwing a tantrum and tearing into him unmercifully, you probably should take some anger management classes. You can never have a sound relationship with anyone until you can control yourself.
On the other hand if he caught you cheating, you have a more serious problem. Needless to say, you have to end the affair immediately.