So I got dumped today😢

I'm broken. Been with this guy since July 2013. I feel so lost. Which is my fault because I now don't know how to live without him. I want to just sit in a corner and cry but at the same time I wanna go to the bar and get shit faced and be crazy yet at the same time I want to find someone new who I could spend the rest of my life with. Anyone else get all these wild emotions after a breakup? Or am I just over dramatic? Advice? What should I do 😢