Sounds like the dog needs some training, discipline - and a job. He should be tired out every day - tired. Jogging, bicycling, treadmill, other activities that are fun, exciting and stimulating and get the excess energy out - not sitting staring at the local korean side dish. He should be thinking asleep is a great way to be.
Play bowing, humping, staring, chasing, these are signs of aggression as well as excess energy that is not getting directed well. The dog is showing signs of aggression, which is typical when a dog comes in a new home and starts feeling out where the boundaries are.
They are not biting and snarling, but they are aggression. Recognize them as such, punish them, no out and out aggression will develop.