A few suggestions to get through NO CONTACT:

Journal -- write him pretend letters and let him have it -- tell him what a huge a-hole he is for how poorly he treated you... .let it all fly and don't hold back. But don't send. Just keep these in a private place like in a journal.

Make two lists: one list which details every single thing he did that was hurtful, neglectful and disrespectful. Then make a second list of all the things you want, need and seek in a relationship -- compare the two lists. You will see how far he falls short.

Any time you want to cave and contact him OR look him up again, review your two lists.

Sing your praises that you are no longer allowing yourself to be mistreated. And exorcize him as you would a demon.