Suffice to say that when we're both 'in the mood,' we plan to have time for ourselves. Sometimes it's frequent, sometimes not. It does not bother me if straight co-workers ask questions. If it's too personal, I gently make that known. However, the only way to bust a stereotype is to confront it with the truth.
Gays are pedophiles.
My partner and I try hard to lead by example and not copy bigoted behavior by repeating it toward another person - even if that person behaves in a hateful manner. Foucalt wrote a great book called A History of Sexuality. He then takes us through Puritanical times, the Victorian era and all the way to MTV videos today. I think other cultures treat sex as a healthy, normal part of life. In the States we have lifted the discourse to some obscene pedestal where we examine it from all angles.