I seriously need help...

My husband just left me yesterday morning. After being home in Pennsylvania for 4 days with his family, he came home yesterday and told me he wasn't happy in Florida anymore, literally packed up his car and left. (We don't have any children) I don't understand why he's doing this to me. My heart is broken and I am in shambles. The worst part is, he didn't even ask me to go with him. I love him more than anything in the world, and he just threw me away like I'm nothing. How am I supposed to get over this? Please, all i feel is darkness, i see no light at the end of this tunnel...