Wow, what a thread this turned out to be. Because two girls went travelling together? What if they were a boy and a girl who went travelling, Portrayed with juuuust the exact same "vague" relationship? Would anyone care? Probably not.
Nobody would probably say "I don't get it, are they heterosexual?".
I haven't read all comments here, but are there any girls commenting in this thread? Or are you just embarrassed on our male behalf? Please girls, come save this thread.