I can add some stories, though they weren't exactly successful, the dumper came back.
A good friend I knew from college went out with this guy for about 2-3 years while in college. The guy would always flirt with women, and do shady stuff with others so the girl broke up with him at the end of that college year. During the summer I comforted her and we actually ended up going out shortly after classes started. This lasted a month. She dumped me, and it turns out she was doing things with her ex while we were dating. After that they got together but it didn't last long, maybe 4 months or so. I cut them out of my life so I'm not positive. I do know that they both found someone else who they are with today (so about 2-3) years.