Well Me And This Girl Was Almost Engaged For A

Well me and this girl was almost engaged for a year and we were happy as can be together. Last Tuesday she dumped me for another man. Idk I can't move on I loved her thin I still do. I haven't slept in 5 days and I barely eat. I can't think because all I think about is her. I want to forget her it hurts to bad. I have her pictures on my phone cause when I feel down I look at them and makes me feel like we could have a chance again when I know we wont. I need help bad I'm falling in deep depression.