I have this spray stuff that you can spray on the sheets... *blushing now* I got it at an adult toy party. Its powder though but it has pheramones in it. If I spray the sheets my Fletcher does this... he goes NUTS!!! hehe Its cute! Im sure hes picking up on the pheramones in the spray and that is what is making him all hot & bothered! Humans give off natural pheramones, so maybe your guy is picking up on yours and its making him all hot & bothered too!