I have two males right now who just are not wanting to eat. I even took one to the vet the other day just to be certain there wasn't more than wanting to breed going on. My vet said the snake looked fine, no disease, no problems just a normal male on the prowl. I am not breeding this season as none of my girls are big enough yet, so both my boys are just gonna have to tough it.
Try keeping the males away from the female cages to decrease the scent.