I cry myself to sleep and wake up crying everyday.

I recently went through my first heartbreak. First relationship, first love, first everything. It's been about a month and a half and I hide to everyone that I'm completely fine. But really, I feel like I'm getting worse. I think about him everyday and wake up crying because of a dream I had with him in it. I know I'm no longer in love with him physically but I don't know when this pain will go away. I'm so scared to trust people again and open myself up to someone else. I don't know when I'll ever be ready to be in another relationship and give myself to someone fully.