I definitely hope so, I'm living with two girls next year! Seriously, I'm sharing a flat from September with two girls at university. One of whom I have never even met (she's the other girl's friend from France), and the other girl is a friend of mine and fellow society committee member. Which means that if you can't be 'just friends' with a girl it might make future society meetings that bit more awkward (we're a film-making group, for the record...)...
But yeah, I'm pretty sure it's not true. You can be 'just friends' with a girl with no problems. I shared a house with five girls and four guys last year, most of whom I'd lived with the year before. And I had (and still have) female friends from Sixth Form who I was never attracted to, though they were generally nice-looking and friendly, personable people.
So, yeah...