Life is short. The short story is too long. Here are some links that can help you with Brokeback Mountain.

http://www.davecullen.com/brokebackmountain
http://leftbehinds.blogspot.com/2005/12/text-of-story-brokeback-mountain.html


New Yorker used to have it in their archives but they pulled it down. Good for them. You need to subscribe to them to download. The short story won the O. Henry Awards, by the way.