This happened with a person I had trusted for years. I thought he would lay down his life for me. Then I picked up on some strange phrases he made. He was very selfish when he was not usually like that. I told him how I felt, and sure enough, he was gone. I found out a few weeks later he had relapsed from his AA program and was showing his alcoholic self to me again. he had been sober for almost two years. BUT...I hung on way too long trying to "give him a break," and it hurt more in the end. Its worse when you have trusted someone for years and it ends up like this.