Hey, So I regularly dogsit two bull terriers, one desexed female and one male (not desexed). Currently I am also dog sitting a small breed desexed male. the problem is, the male bully is obsessing over the other male. He follows him around everywhere and constantly tries to lick him. It's super annoying and he spends the whole night crying at the door where the other dog is sleeping. Hes just super restless. he's never done this before with other dogs. Any recommendations on how to stop him or calm him down. Obviously temporary things as it's not my own dog. thanks