Hi son is 20. He covers his son pot smoking, his son broke a kitchen item, I heard it fall and break, bf said he did it even though he wasn't home. We went on vacation and the rule was no one in the house, he looked me straight in the eyes and said no one is allowed in the house and he know it. There was a party and then bf said he told him he could have 1 person over but to my face told me he told him no one. And then lied about punishing him, he didn't.The lie can be anything, to the point I take pictures of things because he can't lie. I moved in 10/2014, yes his son was living here when I moved in.