very nice
The whole suicide theme's been overdone, but what hasn't been nowadays. It was straightforward. Not very emotional for me, but definitely should be for those who've personally dealt with suicide.
My only criticism is that it could have had more to it. It was a successful shorter flash. Very well animated, and so I ask, why not have added some back-story? Reason for suicide, why they're friends. Not to the point that it gets to drawn out or boring, just enough to boost the viewer's interest in the characters.
Overall, nicely done in regards to what you were going for. And for adding to it, why not make the characters feel a bit more real? It would make them more interesting and you clearly have the skill to do it :)
(ps. I don't know about the dragonfly at the end.. sweet but somewhat cliche)