Bisexuality

I enjoyed this film, but as other commenters have said, the characters seem to be stuck in a timewarp. They live in modern Germany but their attitudes are about 30 years out of date.

One thing that puzzled me was that none of the characters seemed to consider that Marc might be Bi - he could desire Bettina but also find Kay attractive. As soon as he 'crossed the line' and kissed Kay, the door shut behind him - there was no going back, and no middle ground. At one point, after Marc told her that he wasn't gay, Bettina even says "What are you, then?". Has no-one in this version of Germany ever heard of bisexuality?

I felt that the film could have explored the idea of Marc's sexual ambiguity a bit more, instead of presenting him as a man who had a sudden gay awakening. It would have made things a bit more believable. If Marc really was gay, and had no attraction to women, he'd have known about it a long time before the events of the film took place.