Here you have it: The 7 stages of breakup grief. If you're experiencing all of some variation of these, relax. You're not crazy.
Breakups are hard, there's no doubt about it. Unless you're a sociopath they're usually hard for both people too - the one that does the dumping and the one that gets dumped. Unfortunately, a magic pill to make the effects of heartbreak disappear has yet to be invented but in the meantime, here are some tips to get you started.