The first time I saw this film was a while back (maybe a decade ago), and I thought it was interesting. I saw it a couple more times since then--each time a few years apart--and I liked it more and more with each viewing
In my opinion, it's one of the most underrated films. I really don't have any negatives to say about it. It's pacing flowed perfectly, which is really important since the story isn't linear and it travels around through the timeline. Sometimes this isn't done well in films and it becomes confusing to try to figure out when in the timeline a certain scene takes place. This wasn't like that at all; it was always clear when everything was, in spite of how often it jumped around to different events
It didn't shy away from the bisexual element, which I wholeheartedly applaud. Most films, especially ones with famous actors in them (as oppose to small, indie films), will avoid actually showing things like men kissing or any other man / man sexual content. To where even if a character is said to be gay or bisexual, the viewer will never actually see any clear evidence of this. But why shouldn't it be clear, considering how explicit man / woman relationships (kissing, sex, etc.) are shown in nearly every mainstream film?
Along those lines, the relationships in the film are well fleshed-out and complex, including the two main ones between the male characters. I'm glad about that, because it's nice to see bisexual relationships between men depicted as being real emotional connections rather than merely hookups. Especially since it seems that the stereotype about bisexual men (besides that we don't exist) is that our greatest love and romantic attachment is always with women (or with a specific woman), and that men are just people we screw on the side. This film did a great job dismantling this trope
I loved the main characters. They felt real and I could empathize with them easily. Some of them had flaws (some very serious flaws), but they all had enough redeeming qualities that I couldn't hate any of them. They felt like real people, and this was boosted by how great the acting all was. The story had a bittersweet but mostly pleasant and completely satisfying ending that tied up enough loose ends and in the end left me with a positive outlook on how the characters would end up
Also, there were some cool songs, especially if you're into glam rock. Ultimately, I would recommend it