Most Helpful Girl
Yea, they usually do come back. That happened to me a couple times. My two longest and suckiest relationships were ended by the guys (before I did) I dated. And both of them came back literally crawling. The first one was because he "missed" me (he broke up because his family hated me) and the second one for the sake of "friendship", but it was clear that they either couldn't find any "better" than me, or that they were just desperate af, or that they just wanted to be friends with benefits. Honestly, don't go back to an ex. Ever. It's like a going back to your vomit. This is gross and a waste of time. After things are f*ed up, there's always better elsewhere.
Most Helpful Guy
If you don't chase after them when you break up, it's definitely a chance if they are single.
You can pretty much toss a coin for the answer, so many variables