A Broken Heart...

I just got out of a three-year relationship last week. We were together through college, through the first jobs, through everything that comes with being in your late twenties. It's hard to see all these pictures and reminders on social media of us smiling and laughing... It hurts so much more when I look at them now. He told me it wasn't working out anymore, but he didn't say why. Maybe there were things he wanted from the relationship that I couldn’t give him. Or maybe it was just time to move on. Either way, I don't know if I'll ever find someone like him again who understands me so deeply... What should I do now? How do you move forward after something so big and important?