I believe guys and girls can be friends. But I doubt they can be like really good friends who you can trust absolutely anything like your childhood buddy. There will be moments of awkwardness and more ups and downs, possible crush and misunderstanings because of that, lots of irony. You cant just be physically blunt cold towards your fellow from the opposite sex. Is friendship, where both of you agree that it is just friendship, really a true 100% friendship? heterosexual people from the same sex never need to justify if they are in friendship or not. Friendship is just natural thing, you can't agree on your will on that. Of course there are quirrels etc and agreements after that, but overall essence of it is natural.

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