I cheated on my wife. Can she ever forgive me?

You are truly disgusting frankly. I was disgusted reading your post. No, she shouldnt forgive you. Cheating is no minor mistake. You had no business being at that bar, you were supposed to be home with you wife and kid. If you love her more than anything, love your child and had a great life like you say then there's no reason for your wreckless behavior. Stop blaming the alcohol for your dirty behavior. You have killed all trust and bethrayed your family, including your son. If she smart she would drop you.