NF, I relate to this very well. I have learned that for me to keep my peace and mind, I need to keep these kind of people out of my life. Before I throw somewhat of myself in a relationship with anyone, I need to get a feel for a person. If I think someone is a lier. I will just ask a simple question about them, nothing special. They will forget that I ask most of the time, and than maybe a week later I will ask the same question. I have found a lot of liers this way. I also don't like people in my home. When you let people in your home, things will start missing. When I was married to my ex-husband, he liked to have friends over. I can't tell you how many times our stuff would get stolen. I have even had family steal from me. Sometimes we need to be really picky about how we choose our friends. There are still good people out there.