Story may be told more interesting
That was nice. You can improve your technique in order to make the same story more interesting or atractive, but the main concept wasn't bad and the ending followed its mood.
The story of the jelous pal who steals the girlfriend of the hero its a pretty common one, but you decide how to tell it best. You animation reminded me games like Toki (an arcade and Sega Genesis game) and comedy cartoons that involve an abusive and though guy, a skinny one and a pretty girl... My point is, I liked your version of the story but you still need to work out your storytelling abilities. Study the movies / games / books you like and see what makes you like them... Well, that's if you want to be good telling stories, you may only want to learn to make things look good, it's up to you.
Learning to use a tool, anyone can do it with time, but the content of what you make with the tool, well, that's another thing.
Keep the good work.
By the way...don't judge my review on my animations, I haven't put really in practice anything about good storytelling yet, they're just lame exercises.