When I was 19 I got real depressed when my first "real" girlfriend dumped me on our 2 year anniversary. The whole "I'll never love again thing."

Over the next few months, I dropped from 185lbs to 165lbs, and my GPA went from 3.65 to 3.05. I was never in a "I want to kill myself" state, but I was pretty lethargic and didn't want to eat anything.