I sense that Bemol might be picking up on your boyfriend's attitude toward him. My suggestion is for you to assume total responsibility for this dog. He just is going to respond better with you than your boyfriend at this point. Ask your boyfriend to lighten up a bit with Bemol. I have a Cocker and he is a very sensitive fellow.

Second your dog is really still a puppy in many ways and yes, they can go through these stages. Although I never had one urinated on the couch, I've had them urinate on the bed and on their own dog bed and yes, right in front of me and right after she was outside. It doesn't mean that it will continue or become a habit, but I think neutering is essential.

Sometimes it's better to try to adjust your schedule a bit suit the dogs habits. Take a little extra time in the morning to stay out long enough to get both things done. You are right that exercise will stimulate one or the other of the bodily functions. Or if you can, go out twice. At least you know how your dogs body is functioning for his needs. Be a little understanding. I always think we demand so much more of our dogs bodily functions than we would ever be able to handle ourselves. Be sure your puppy has some chance to play and exercise every day, preferably at the same time and outdoors.