Secret Rebound Sex. Getting cheated on is the worst. Even worse when it's your fiance! My stepsister Zoey tried consoling me, but I wasn't feeling it. Then she reminded me of a pact we made when we were younger about how we would get married if things didn't work out on our own, sorta like a safety net. She put her hand on my knee! So I went in for a kiss and she liked it! Things were looking up when she let me take out her big tits and fondle and suck ...