Yes, I was used as the excuse as to why my biological father had to marry my mother and he in turn acted in passive agressive ways against us both to quit his jobs, take drugs, neglect me, abuse me and have sexual parties exclusive of my mother's knowledge and participation but in full view of me. My step father also physically and emotionally was abusive and treated me like unwanted baggage that my mother brought along and my mother was forced to 'choose my stepfather over me'. A lot of times jealous people wanted to make me feel invalidated as a person to make themselves feel better. Still working on this thing of having intrinsic value and not having to prove worth through self-sacrificing just to validate my existence when others believe that their mere existence has much intrinsic worth than that of others' existence.