I'm so lost

I loved him. This time I really did. I really do. I don't think I've ever been so hurt in my life. And he doesn't understand why the simplest thing he did hurt my feelings. And I don't even know how to explain it but I tried so hard to explain it. I have cried for the past three days because it's so hard not to talk to him. But I can't sit back and let him think it's okay to always let me down. Idk what to do. I'm so lost. And now I'm gonna lay here and cry until I fall asleep. I don't really have anybody to talk to so I figured I'd pour my heart out here.