My wifes brother's wife ..

My wife told me a story once about her sis-in-law being caught screwing around with her other brother.. Ive always thought the accussed sis-in-law to be quite sexy, me being flirtatious and all devised a plan to test the waters to see if she really was a slut and if so try and get in on the action..I started making little comments with innuendos and she always laughed,smiled, or played along..then i moved on to playful touching..to all out grabs and feels..I stayed over one night and purposely exposed my cock after getting out of the shower, she came over and bent down and gave me about 3 seconds of a BJ, then smiled and walked away.A few weeks later I dropped by unanounced when I knew her Hubby, my Bro In law would be away.. she opened the door and I fucked her right on the couch. That was 3 yrs ago, and weve been meeting up at a local chain hotel ever since..I must have fucked her a 100X and have like 40K in points from the said hotel chain.

So yeah, my sis in law is a slut, and I dont feel guilty anymore.