You have just made your girlfriend angry or upset for the first or the umpteenth time.
At the time, may be you didn't care or didn't understand or appreciate the situation.
Now that it has happened, you realize how much you really care for her and you are now afraid of losing her.
Even though ego or pride is trying to block your way you know you have to apologize to your girlfriend.
Here is some information that will help you figure out the right moves.
If you need to apologize for anything that you did wrong, then please don't hesitate to do so.
Just make sure you understand what you are apologizing for.
Some times you think you know because maybe you said something or did (or didn't do) to start the argument.
Don't assume that is the root of the anger.
That might have been what set her off but it might not be the core reason she is angry with you.
Before you can apologize you have to truly understand what she is upset about.
Anyone who knows her well can probably help you because she has probably told them but understand her friends may not be supportive of helping you so you are going to have to really dig inward and listen to that little voice trying to tell you what is going on.
Once you know what she is angry about, you need to look inside of yourself and determine if you are truly ready to change the behavior that upset her in the first place.
Once you have made that determination, you need to address two point if you are truly serious about how do I apologize to my girlfriend.
1.
Make sure you use the apology to prove to your girlfriend that you completely understand where she is coming from and that you are 100% ready to change that behavior.
2.
Take action - Show that you are serious by showing that when confronted with the same situation that made her angry in the first place, you will take a different road.
A road that shows that you are serious a committed to her and your relationship.
Only then, will she believe you are serious and she will be impressed that you are so committed to the relationship that you were willing to change for you.
One last piece of advice.
When you go to talk to your girlfriend and you are pondering in your head "How do I apologize to my girlfriend?" make sure you are listening to what she has to say and listen with complete sincerity (she will know if your faking).
Do everything suggested here and you are well on your way to getting her back.