Until you accept your body in a broad sense and the sexuality within it, in particular (if you like, you can call it sensuality), you will not be able to dance. Something always will be shameful, uncomfortable, and stiff. When your body is conscious and full of emotion, it dances together with you, and not beside you or even against.
Our culture has a big but hidden problem – disregard of body/embodiment. We heroically endure cold and hunger, we have invented a hundred of euphemisms for sex, and even common embraces and smiles are in a grey zone, where Russians are not very skillful. And it is understandable, it is cold here, there is hunger, constant five-year plan in three days, wars, mindsets that short skirt and red lipstick is only for frivolous ladies. I am sorry for generalization but this is the context which brought up generations with repeated distinctive body tensions. Argentinean teachers get surprised and literally "untwist" our backs, hips, joints in order to get the desired movement.