I also definately disagree with the notion of "not getting back with an ex".
From my own perspective, I have seen many relationships break up (especially when young), and the two get back together and live happily for over another decade (and these couples are still together). WestCoaster, you are probably basing your opinion over the fact that you were burnt and your own experiences.
Much of the time, getting back with the ex will be a time bomb. But if you love her, and can see the love in her eyes, there is very good chances that you can get back together and both adapt to make it a very workable and loving relationship. If you both love eachother, you are willing to put in the effort. (this is why it is a must you can see she loves you also). Further, pride must be put aside, and this attitude of, I will always do what I want MUST go out the window! You both have to give 100%! If she does not, she is not worth your time!