Thank you for using my song! :D
(I am not an artist and have no flash experience, so my review might not be great. Here are my thoughts, though)
I liked the flash! While the art wasn't top-notch, it looked very good for hand-drawn. I have seen many first-animations that were crude stick-figures, and this is definitely better than those. You've got a good start!
I do have some gripes, however. The biggest problem with this is the walking animation. Every step is very rigid and choppy. It looks as though there were no connecting frames between each step. I don't know much about flash, but I believe there is a technique called "Motion Tweening" which would held in this regard. I'm sure there are tutorials on this site somewhere.
The sky and characters all looked good. The landscape was nice, and the color choice matched nicely with the mood of the song. I never imagined this song being in a video about love, but it worked rather well to my surprise. :)
I did notice one character which I have to criticize. There was a person who was in the shadows and was colored black. This character looked too "blocky". :(
As far as the story goes, I didn't really get it. xD I understand the underlying theme of love, but did not understand how wolves fit into this. I also didn't understand why wings came out of the person at the end. Was this supposed to be symbolism and represent freedom or something?
Anyway, this is good overall. It isn't the greatest in the animation and story department, but the drawing were good and the music fit well. With a little bit of patience and practice, you could be a fine flash artist! Continue to work hard and hone your skills. Oh, and thank you once again for using my song! :D
~BlazingDragon