My sister acquired me to blackmail for several months

If not the purpose will do everything to ruin the relationship between me and my girl!, That bitch of my sister acquired me to blackmail for several months: if not the purpose will do everything to ruin the relationship between me and my girl and this is not can I afford. I had to install a camera where I resume our sex scenes forced and denounce it to be able to win on her, the washing of the mind that I was doing for months was unbearable now, I could not resist to his games of words!