4-months post..... when will I stop being sad?

End of September the fog was lifted - I found out all at once that my partner had been cheating on me for 5 years straight, had a second girlfriend he hid from me, had lied about his entire identity including past military experience and multiple cancer scares. All at once my entire life was ripped out from under me out of nowhere.

I left the day I found everything out and have been couch-hopping at friends places since then. Staying with friends has been good for me, but also sometimes I think i've just been distracting myself constantly. I now have my own apartment in a completely new city. I am excited and hopeful about my future but also at the same time, I am just sad all the time. I find myself crying randomly without warning - when i'm alone or sometimes when just driving or running errands. No specific thoughts spark the tears.... i'm just sad all the time. Lonely. Lost. I feel emotionally broken.

When will the sadness go away? Will I ever be able to have a normal relationship after this? I'm so emotionally drained and just.... SAD. Needing support.