FAQ for
Brokeback Mountain (2005) More at IMDbPro »

The following FAQ entries may contain spoilers. Only the biggest ones (if any) will be covered with spoiler tags. Spoiler tags are used sparingly in order to make the page more readable.

For detailed information about the amounts and types of (a) sex and nudity, (b) violence and gore, (c) profanity, (d) alcohol, drugs, and smoking, and (e) frightening and intense scenes in this movie, consult the IMDb Parents Guide for this movie. The Parents Guide for Brokeback Mountain can be found at http://www.imdb.com/title/tt0388795/parentalguide.

They didn't. If you pay attention, you see subtle signs early on that show they're feeling closer to each other.

Indeed the entire first part of the movie, far from being just pretty scenes, shows the unspoken attraction that is developing between them, especially by Jack.

It's Jack's flashback to a happier time during the summer of '63.

The montage we see is what is going in Ennis's mind as Lureen is talking. The movie - like the story it is based on - leaves it to the viewer to decide what really happened. Lureen's account could be factual, but Ennis's suspicions might also be correct.

Ennis: Jack....I swear....