There has to be an anticipation of sex though...and arousal. I can think about it and not be aroused. It is a weird phenomenon though. I've asked on other forums and no one else has experienced it.

Shivering can happen when you get an adrenaline rush. Were they extra hot?
What about bacon with maple syrup on top? Does anyone here like that?
Without looking, can anyone guess what SH member just said this on G+ and also is clinically a fucking maniac?
rub a balloon with your hands (creates bodily scent on the surface), put the balloon near where the wasp is flying around, and if it stings the balloon, the bursting impact will shock the wasp and you can watch it self-destruct.