My step-son and his fiancée have came to stay with us for the week, as their wedding gets closer and then have some arranging to do. I have always been very close and protective of my step-son.

I check in with him when he is alone, to make sure he is ok with everything and that things are still going well between the couple. He tells me he has been working away a lot and they aren't as close as they were. I have always thought his fiancée doesn't like me that much, but this week she seems even more off. I try and talk to my husband about it but he isn't interested.

I decide to trust my instinct and go snooping in her bag and read her texts. I soon find out she has been having an affair and cheating on my step-son, I am so angry but know I need to tread carefully.

At a step-family dinner that evening I try and put a l*ttle more pressure on his fiancée questioning her, and defending my step-son without saying anything too suspicious.

The next time I am able to get my step-son on his own, I tell him what I was on his fiancée's phone, and that I am only telling him as I have his best interests at heart.

Later that week, my step-son comes and finds me in my bedroom and tells me he confronted his fiancée; she initially tried to blame me, his step-mother and said I was jealous and that I fancy my own step-son! But then soon after she confessed to cheating. My step-son is so upset, the wedding is off but I am there for him. His fiancée is gone, his step-father is out; I confide in him that things aren't all great between me and his step-dad either.

I have a crazy idea to take both of our minds off everything, I tell him to wait there and then I come back into the room in sexy lingerie, as his step-dad doesn't appreciate this kind of thing. We both know its so wrong but end up not being able to resist each other, we have both longed for this intimate touch for so long, it just all came to ahead, I guess a step-mother's instinct is always right.

Includes bl*w job, handjob, POV fingering and p*ssy l*cking, missionary, cowgirl and creampie

First half of video is slow b*rn, storyline, multiple scenes. Last half of video are s*x scenes.

Big Tits 18 & 19 Yrs Old Older Woman / Y*unger Man A step-mother's instinct with C4s.com