Most Helpful Guy
I was in that situation after breaking up with my first love and whom I thought was my bestfriend.
Together for 7 years but things didn't work out. I got depressed and thought it was the end of the world. I didn't want to lose her completely (at the time) so we remained "friends". But it's hard to move on in a situation like that. Eventually, i decided to "mute" all her social medias so i was still able to torment myself and look at her profile etc. After a few weeks i found myself going to her profile less and less. Until finally i even forgot we were still friends on all social media. That's how i moved on.
Moving on is always going to be hard at first obviously, but time heals all wounds. You gotta give yourself time to heal. Its not gonna happen overnight... Not in 3 days. Not a week. Maybe not a month or even a year. Its different for everyone. Im sorry about the break up OP. Wish i could do something to rid you the pain you're feeling right now.
Most Helpful Girl
You need to have some distance or you won't accept the break-up (like you obviously don't want to) but you have to accept it's over, and to allow that to sink in and readjust to not having the relationship, you need to stop having close interactions with him and certainly don't be friends with an ex.