Hey most of us, including myslef, have been there and it does get better. You are probably suffering from situational or acute depression. When relationships end most people feel depressed and I remember feeling like you many years ago when my girlfriend of two years left me. It took me some time but within six months I was doing much better and within a year my life was much better than when I was with her. I met someone new, got a better career and most importantly learned from the experience. Time is the ultimate healer in a case like yours but you can do things to speed up the process. Distract yourself. Do things (healthy things) that you would not normally do. Start a workout program. Start a new sport or hobby. Make new friends. Take a nice holiday. Build new relationships and keep busy. The busier you are the less time you will have to dwell on what happened and before you know it you will feel great. Good luck to you!