Definitely don't do what I do, which is to shut down entirely, pretend it doesn't bother you, and completely close the door on any future relationships until you've gotten so used to being alone that you probably couldn't allow another person in even if you wanted to. Super healthy stuff! Honestly, being able to express that you're sad and hurt is good. It hurts and it can feel unbearable, but it means you're still feeling things. The last time I coped in a healthy way, I wanted to wallow in bed (and I did, some) but I made myself get up and do small things I enjoyed. Nothing big that required a lot of effort, just things like going to get lunch with my mom or taking a walk with a friend. It was distracting enough to ease the pain, and showed that my whole life wasn't over because of a break up. The only other thing that helped was time.