My sister in law is a beautiful woman and she knows it to well , she got divorced a weeks back and moved in with us while relocating. Before my wife and got married we had sex a few times and she really is a wonderful fuck.She however blackmailed me for cash to keep it a secret from my wife.

I have been waiting for my opportunity for revenge and I found a way for a little payback , I make breakfast in the morning for the three of us and when ever possible I have a wank before serving breakfast and I mix my cum in food ,coffee etc.

I sit and watch as she eats my cum almost every morning , i want to setup a spy in her room to see if I can catch her masturbating perhaps i can use that to get a fuck from her again.

any suggestions is welcome.