It's hard. You have to grieve the loss and then "replace" it with something new; you invested part of yourself in the relationship and now have to get it back and reinvest somewhere else, probably with another person.

When my boyfriend and I broke up it was a horrible 6 months and even a new, exciting job didn't quite do it for me. It took another relationship beginning (the one with my husband :-) to get things back to life.

Hope things get better for you soon.