Technically it's a matter of perspective, but I don't really see any way that it could be anything but a lesbian love story. The only love interest is between Elsa and Anna. The movie's whole message is that love takes time and doesn't have to be built on romance in order to be considered True Love. There's even more chemistry between Hans and Anna than there is between Anna and Kristoff, which isn't saying much since there is less than none between Anna and Kristoff, but still. Plus, come on, Sven would get so jealous if Kristoff cheated on him.