ROFL @ Seaver's comment.
*cough*
anyhow, I have MANY platonic straight male friends that tell me they love me, and I reciprocate regularly- It's the nature of a good friendship to express it in terms of close endearment.
My husband knows this, and accepts it, even from day one- and he too has close girl friends he'll say "damn, I love you for that" to and such.
I love you, man.