My boyfriend's dog is 5 years old and still is not housebroken. He is destroying furniture by peeing on it. What can I do?

I recently moved in with my boyfriend. I knew beforehand that his dog, a 5 year old German Shepherd / Doberman was not very well trained. After my boyfriend's divorce he allowed his dog to sleep in bed with him. Since I moved in last November, Buddy knows not to do that but will sneak up there when I go in the shower or my boyfriend will allow him to when I leave the room. Not only that, but this dog is allowed to sleep on the couch. Everything smells like dog! He also has 2 Doxin's that come over for "visitations" along with his kids ( give me a break ). These two little hot dogs are allowed to sleep in the bed. When I objected my boyfriend said that there is nothing I can do about it. That was the way they were trained and have always slept in their bed. So that's my first problem: Dogs taking over my bed.

My real problem is that all these dogs go potty in the house. But let's just concentrate on Buddy, the one I have to live with every day. He's 5!!! Big Dog = Big Poop! I know before I moved in these accidents would happen but it just seems like it's getting worse. Every morning I wake up to a fresh pile of poop in the living room along with 1 to 2 pee stains on the carpet ( this happens while we're sleeping, never during the day ). He's ruined one of my comfy rocking chairs from lifting his leg and relieving itself on it. And now he's starting on the other rocking chair and my entertainment center. ( I'm starting to take it personal ). We let him out at night. I even watch him now to make sure he goes before letting him in. I'm at my wits end. I can't walk barefoot in my own home because there has been accidents on every inch of the carpet. I suggested keeping him confined in the laundry room at night and when we go to work during the day but my boyfriend said Buddy would go nuts. My predecessor was a housewife so the dogs always had the freedom to roam the house.

Oh, one more thing. Is it normal for a dog to lick it's privates when they are scared and / or excited? When either Buddy sees his leash or a towel to wipe his feet he lays down and starts peeing all over and licking himself. It's disgusting.

I don't think these dogs got the proper training when they were pups. They were never put in a crate or confined to a certain area. I need help.

Diane