I lost my best friend to suicide 2 years ago. There are still times when times when I breakdown, and have to go home and cry. After it happened, I didn't go outside for two weeks after, and it was a long time before I felt better. Everyone deals with grief differently. It only becomes unhealthy if you let it consume your every thought. Losing someone you love is never easy. What got me through were my other friends. We remembered all the good things. Try talking to someone else about what you're feeling. Just remember that time does not heal all wounds, but it does helps us find new things to fill the holes in our lives.