To me, it sounds unlikely that you and Fenway will develop a bond. You've had him for a while, it hasn't happened, and to me it doesn't sound like you wish to try any longer with Fenway. I know I don't know you personally and this is only based on what you've written so far. I'm sorry you find yourself in this predicament. Maybe Fenway wasn't the best choice for you from the start. Is there any way the breeder and trainer can find a dog better suited to your situation and let Fenway go back to the breeder?
I'm sorry this would mean starting over with another dog, perhaps one past the adolescent stage. As others have suggested, that sounds like the best choice at this point.