I’ve had two broken engagements (both of which I ended, and for good reason, even though I loved those assholes).
I cried a lot, I drank occasionally (don’t overdo this), I went to the Rocky Horror Picture Show every fucking week (find a screening with a live cast acting out the movie in front of the screen, if you can), I listened to a lot of music, and I did a spell to get over the one really bad one (wasn’t necessary with the second guy).
Read part 2. That’s the “how I got over him” part.
If you choose to give away items from your relationship, maybe offer them to the entity of your choice first, and trust that they’ll send it where it will do some good. (In my case, I tossed a piece of jewelry into the ocean, offering it to Venus.)
You WILL get through this! 