This movie has grown to become a favorite of mine. I first saw it when it was released to art house theaters in early 2002, and loved it because I saw it as a movie that spoke to me personally, as it is very frank and realistic depiction of young male relationships and sex drives. I loved the performances of the two male leads, Gael García Bernal (Julio) and Diego Luna (Tenoch), who went on to do more movies, and the female lead, Maribel Verdu (Luisa), who hasn't been in much lately to my knowledge. I thought her performances should have received more acclaim and awards.
I love the road trip theme of this movie, and the sense of adventure they all set out on. The movie also features a narrator who talks about each of their lives in detail, as a book or novel would about a character, and over the years I have found myself watching it multiple times to catch things I have missed previously.
On my latest viewing, I paid closer attention to find hints of bisexuality in the beginning, but could not find them. I paid attention to the fighting between Tenoch and Julio after Julio sees him in bed with Luisa; after that, everything changed. I suspect that they both might have been lying to each other, but Tenoch seemed genuinely remorseful. Also by the end of the movie, everything was fine between them again until the night, when everything falls apart. I'm not surprised that they never spoke again after meeting in the diner; sometimes you just want to put the past behind.