Your play was fine. A donkey sucked out on you by making a call that he definitely should not have. You want them chasing their 5 outs with approx. 2:1 pot odds. You will win more often when bad players make mistakes like this so just chalk this one up as a "bad beat".

With that in mind, this is definitely a bad beat post and the type of thing that is frowned upon in this, and other, forums. Some posters will go so far as to berate your post for its bad beat content. It's also generally bad form to post screennames in your hand histories. You should use the hand converters whose links are in the stickied anthology post.