Thank you Dandylion and LexieCat for your advise. We went and saw the therapist yesterday and it put things into perspective FOR ME! It was unfair for me to go behind his back and talk to his parents. I should have consulted with him first.
He was off work yesterday and I was amazed when I get home from work. The house was clean, no beer bottles everywhere, laundry was done, dinner was made... I think he is really trying and I may be giving him the benefit of the doubt. But, I honestly do think things will change.
And yes, he's scared. He doesn't know anything other than to come home and drink/drink all weekend long. He's been doing this for the better part of his life. He needs to fill his life with positive things... working on cars/motorcycles, going to the gym, taking our dog on a walk.. Not just coming home and drinking. It's depressing and I think therapy is helping both of us understand everything.