"Funky" is one of those words (like "cool" and "jive") which have been around a long time, often beginning as esoteric, but being picked up by different communities, where they acquire different shades of meaning. I'm not sure here if he intends to imply that their relationship was "Platonic," or that it avoided non-traditional practices. The "you know," lead-in suggests that he does not wish to be specific.
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