You probably have messed things up to some level and eventually this led to relationship breakup, and the relationship you've invested heavily in is now as non-existent, at least temporarily.
So I'm going to share my relationship breakup advice with you, but you'll have to re-invest in bringing back that loving feeling just as heavily as - if not heavier than - making the relationship work in the first place.
The monumental words "I'm sorry" is only the start of it.
To get the love of your life back, you'll have to go all the way.
My First Relationship Breakup Advice: Allow Letting Go Of It Not of your ex, but of your negative feelings of resentment, anger, jealousy, enragement etc.
My relationship breakup advice to you is: you have to remember that you're not the only person feeling pain for the relationship break-up - your ex is, too! So please try to avoid being selfish, and consider their side of the situation also.
By putting yourself in the shoes of your ex and empathizing with them, you will be able to genuinely show how much you want to get over this troublesome breakup, making reconciliation much more likely successful.
The Next Relationship Breakup Advice to You: Avoid Desperation on Your Way! No matter how painful the separation can be, you have to retain your dignity.
Do not act so desperate as to fall down on your knees in front of her, begging like a child without his most-liked toy, pleading them to come back, and promising all sorts of things.
You will never ever win any contest on how to get your ex back in this way! Instead, you should act like a self-respecting person really should - able to face heartbreak, able to take it like a strong human being, and able to live life without them.
When embarking on the steps of how to get your ex back, you may be making the dangerous mistake of getting your ex to pity you and come back to you out of guilt.
The question is: "Will she stay for long?" Most probably not.
So the best relationship breakup advice to you in this situation is: don't act like clingy and pitiful person, it won't help you.
Again, no matter the pain, try not to be a pain in the behind with hysterical theatrics.
You will soon have your ex back happily if you're not.