trained very well till this morning.? He started peein on all the kids stuff like he is marking it.Thats fine for outside n all but he sprayed on my boyfriend too.I can not put up with that sprayin like a cat around my house.What do I do to resolve this?I cant get rid of him.He still has his jewels.I have never had a male dog to do this in the house.Whats his deal?How do I solve it?

Neuter him. Your vet will also want to do a preliminary exam to make sure there are no other physical reasons that your dog is suddenly peeing in the house.

"Scold" him. After he's done it, bring (pull) him to where he's "marked" and literally SCOLD him. He will get the message that he's wrong. Beat him if need.

Dogs are territorial. When they need to mark their surroundings they pee on it. Maybe you should train him not to do it in the house. Scold him when he does it in the house.Frequently scolding him every time he pee in the house would let you dog know that its not allowed. If problem persists ask your vet about it.