Why are you terming it as depression.  It is normal to feel unhappy. At the same time,  you can learn to face life differently,  motivated and dreams and goals to achieve.

Hi. I can understand what you must be going through. End of any relationship is very difficult time and considering the fact that you are suffering from depression certainly makes it even more difficult. Talk to your psychiatrist about what you are going through. Increase in dose of anti depressants can be considered. You can also consider psychotherapy sessions to go through this phase of life.