The "dumper" regrets and the "dumpee" moves on?

Ladies, how many times have you ever dumped a guy and eventually ended up regretting it. No matter how bad something he did was, or what your fights were about, you remember the times he treated you great and thought maybe the break up wasn't worth it? Is this especially true with the "dumpee" moves on into a new relationship with all the perks you used to have? How long did it take to regret? Did you ever go back?
The "dumper" regrets and the "dumpee" moves on?
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