Making the pain stop?

Ok so I spend all day trying to get over him. My boyfriend and i broke up 3 days ago. We ended so freaking well. Like talked everything out and came to the conclusion. But he was my absolute everything. I used to think id die without him. Well, im still living, but its hard. We spend everyday together for 2 years. I havent seen him in 2 days and i feel dead sometimes. Waking up is the worst though. I dream about him all the time. And now when i wake up i have to remind myself that this nightmare really did happen and this is real life. When will this feeling fade