Is waltzing more sexual? I guess it depends on who you're waltzing with. I've always found waltzing to be romantic, but not sexual in the way contra feels.

Part of it, too, is that waltzing brings up silly memories. In high school freshman biology, in the genetics unit, we talked about "running mice" and "waltzing mice." It's some genetic trait, where the former move in straight lines and the latter move in circles. Still, the thought of mice dancing to some Strauss waltz sometimes gives me the giggles...