I saw this film as part of the Rotterdam Film Festival 2012 with mixed results. On the positive side: Powerful visuals, accompanied by an even so powerful sound track. On the negative side: Mixing cartoons (3/4 of the time??) and "normal" film is intriguing, leaving me unsure whether I hate it or love it. Halfway negative: Some meta jokes and stories, especially those in the beginning, contained some bright ideas, but they tend to wear a bit thin after a few repeats.
Overall, I found the film chronologically confusing. This may be intentional, given the quote "Love is confusing time wise". The order of the scenes reflects that statement exactly.
What I missed most is that we do not get the chance to really know the two main characters: what do they do, their interests/hobbies, and their purpose in life?? Probably I'm too rational in this, since love does not care for such trivialities (not my words). But still, I consider it a defect. I can accept that I'm alone in this, deemed overly rational by everyone I know. Anyway, it was the reason that I failed to get involved.
The Q&A after the screening was very enlightening. We learned that actually writing the script only took a few hours. The real effort was put in the editing, in order to reduce many hours of footage to only 90 minutes. He dropped scenes he considered "too long" (very logical) plus some with less clothes on (otherwise people would wonder what was going on, distracting from the actual contents). The long production time, around 8 years, was caused by other obligations, like finishing school.