Studies have shown that the feelings of loss during a breakup are similar to heroin withdrawal, which explains how wildly some of us respond to the devastating end of a relationship.
One of the hardest parts of getting dumped is coming to terms with why the relationship ended. When you're not the one initiating the breakup, it's all too easy to feel blind-sided by the end of something you assumed was mutually good. Sadly, since breaking up with someone is hardly easy on either side, it's pretty common for break-ups to happen without a clear conversation about where it all went wrong.
In most cases, the mystery of why it all fell apart inspires countless obsessive conversations over happy hour that eventually exhaust all your friends. However, there are some breakups where people simply cannot process in healthy ways, and they proceed to bother their ex until all positive memories of the relationship dissipate into an embarrassing heap.