I have a stepmom just like that we have not been able to get along for 6 years now and it is pure hell I am 16 now I moved with my dad when I was 8 years old.the first two years were a piece of cake and then I started to get angry with her I didn't want her taking my moms position. I hate being a step child. I had a boyfriend and I wasn't supposed too so she went on my Facebook messaged him telling him I am a liar and decietful that I am not allowed to date till my parents say so and that he shouldn't date me anyweays because ill get him into trouble. That has set me off she wants me to fix our relationship but how can I when she does things like this?? It's like she is trying to ruin my life... So I am right there with you