Sorry for the long post
When I first came around these boards roughly 7 months ago when my ex broke up with me I hated seeing those posts of "just move on" and "they are never coming back". While I am still not an advocate by any means of completely whisking away hope, because I truly believe anything is possible, I finally understand those comments. I struggled A LOT for the first 5-6 months with clinging on to hope. My ex is with a new guy and I lost so much time simply analyzing everything and hoping she will return. What I came to learn is, it really doesn't matter right now. Hoping someone will come back to the extent that you are torturing yourself about it won't bring them back, but it will hinder the healing process. I believe, from what I have seen in my life, that reconciliations after a long BU are usually offered once the dumpee has moved on. By move on in this instance I mean happy, confident, and "whole" again. So the comments of move on and forget about them, TO ME, don't mean you will never reunite, but they mean you need to simply look at how things are right now, and realize that there is (in most cases) nothing you can do to force the situation in a different direction.
Now I don't think this post would be appropriate necessarily unless I actually said something on topic to the thread title, so I will begrudgingly give you the 3 stories I know of.
Contradicts what I said above, oh well.
1) My sister and her now husband dated for 6 years but those years were very on and off. The last time they broke up, she was a sophomore in college and he was 1 year out of college. He broke up with her, and my sister still believes that it was to pursue another girl because this other girl had proclaimed her love for him and they began dating shortly after the BU. My sister went no contact and healed. Somehow she managed to complete her healing process within 5 months (I have no clue how), but was able to start a friendship with him again from a place where she was comfortable with him dating someone else. Well maybe 3 months into the renewed friendship he broke up with the new girl and started dating my sister again. They have now been married for 7 years and have 3 kids.
2) My ex girlfriend's baby sitter growing up was with her boyfriend for a few years. I think he was deployed in the army and cheated on her. She broke up with him. Not sure how long they were separated but I know that they are married now.
3) Lastly, this story I just learned about last night. One of my best friends in high school dated her boyfriend for 3 years, went to the same college, but then he started treating her really poorly and she had enough and ended it with him. I saw her last night and she told me that even though she had been with other guys she still loved him and 6 months after the BU she asked him to get back together. He said he still cared for her, but declined. He now has a new gf. So this isn't a getting back together but the dumper did offer for a recon and is still hung up on him.
Once again, something it took me a long time to learn is that while it is comforting to find similarities within someone else's story, no 2 situations will ever be exactly the same. Nobody can tell you whether or not your ex will come back, but what you can do is control how you live your life.