Have you offered to just stay friends with your ex, even though there is a new partner on the scene? Really man! Why are you doing this to yourself? You do realize don't you, that all you are doing is making yourself freely available for your ex - in other words, you are a crutch for your ex in the new relationship.
Do you really think that what you're doing will be getting your ex back into your life sometime soon? Think again, my friend! You are giving your ex the best of both worlds on a silver platter.
There's a new partner in his/her life, AND if your ex is upset about something, you provide the shoulder to cry on - wow! What a doormat you are! Get out of this situation, and fast! Either your ex comes back to you, or gets on with the new relationship on his/her own, without you to help with problems.
Remember, they're your ex's problems, not yours.
I CAN tell you this much though - the only reason why you are doing what you're doing, is because you are still hurting from the break up.
Listen to me though you really don't have to be THAT desperate.
Your ex's new relationship is probably a rebound relationship anyway, and more than likely won't last for very long.
Still don't know what to do? WAIT! Yes, just wait until the time is right, and then do what you have to do.
At the moment your ex is all starry-eyed about the new partner, but sooner or later this will fade.
There's no doubt that your ex is comparing the new partner to you.
No way has this new partner got any chance against you! You and your ex were together for a long time and were really happy together.
It was just that stupid argument that caused you to break up.
You still love each other though, so just bide your time, and let your ex discover just how much he/she still wants you.
Now that you've got the picture, you WILL be getting your ex back, and soon.
Any day now, your ex is going to call you and tell you that her new partner really sucks, and she wants more than anything, to get back together with you again.